Universal game download system for legacy gaming machines using ROM and NVRAM emulation

ABSTRACT

A universal method and system for downloading game software to ROM based legacy gaming machines, activating selected games and providing new services. The method includes a ROM emulator for replacing the game program image and an NVRAM emulator for swapping the game context and critical meters accordingly. The method includes detection of the state of the current game activity such as to activate a new game only at an authorized time, when no player is playing a game or is carded-in for example. The system includes emulation of the original peripherals fitted to the legacy gaming machine such as to offer extended functionality and services. The universal method and system therefore prolongs the useful life of legacy machines which otherwise would be prematurely retired.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a continuation-in-part of patent application Ser. No. 11/138,736, filed May 25, 2005, which is a continuation-in-part of patent application Ser. No. 10/789,975, filed Feb. 27, 2004, which claims the benefit of provisional patent application Ser. No. 60/453,627, filed Mar. 10, 2003, all applications of which are hereby incorporated herein by reference in their entirety and from which applications priority is hereby claimed under 35 U.S.C. § 19(e) and § 120.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present inventions relate generally to the field of network connected pay computer-controlled games, either games of skills or games of chance, and more particularly to the field of automated monitoring and control of a large number of clusters of pay gaming terminals. The gaming terminals may be slot machines, video lotteries, bingo systems or lottery terminals in all their forms; that is, desktop terminals, wall or pedestal mounted kiosks, or full size consoles, operating either in a local area network (LAN) or in a wide area network (WAN). The present inventions also relate to the monitoring, control and payment systems linked to the gaming terminals.

2. Description of the Prior Art and Related Information

Pay entertainment and gaming systems of the prior art, either of the cash-in or the cash-less type, are seriously limited due to the technical choices made in order to comply with gaming regulatory requirements. Regulators are mainly concerned with funds that may be illegally acquired by individuals as well as with funds that may not be acquired by legitimate winners as a result of flaws, cheating and/or stealing. Game regulators are reluctant to accept state-of-the-art operating systems, multimedia and Internet technologies because of security concerns and tend to favor antiquated technology based upon secrecy rather that “open” state-of-the-art technology. A “Request/Authorize” method for downloadable games has been proposed by another company (IGT's Secure Virtual Network in a Gaming Environment—Publication US2002/0116615 A1) but the method disclosed therein does not cover how to ensure that only certified authorized components may execute.

Although downloadable games are undeniably going to flourish, they have yet to create confidence within the regulatory arena.

SUMMARY OF THE INVENTION

Embodiments of the present invention overcome the security limitations of the prior art and allow game operators the flexibility to dynamically configure their estate of gaming terminals. It is to be noted that although the gaming industry has coined the term “downloadable game” and that gaming standard GLI-21 entitled “Game Download System” has been published by Game Laboratory International (GLI), the term downloadable game is rather restrictive, as the downloading of software components to computer terminals and computer servers is by itself pervasive in any network distributed computer system. However, downloading certified game components in a secure manner is a problem that has yet to find a satisfactory solution.

Embodiments of the present invention may allocate an individual PKI certificate to each executable software component and each of its versions, binding the PKI certificate to the executable software and associating a distinctive policy for each PKI certificate. The PKI certificate's “Subject Name” (or “Issued to” field, or “CommonName” field) may be a concatenation of the software component identification, its version number and optionally other identification characters, for example.

According to other embodiments, the present invention offers a method to enable dynamic configuration of gaming terminals installed in one or a plurality of gaming premises whereby certified games, certified data files and certified support software components may be activated in accordance with a predetermined schedule or automatically in response to the observed gaming activity. This may be accomplished by configuring and then enforcing the software execution policies for selected PKI certificates in accordance with the desired authorized game configuration and schedule.

Further embodiments of the present invention offer a method to ensure the trust of non-executable files such as initialization or configuration files, video files, sound files, multimedia files, file containing list of hashes, CRCs, and/or signatures. This method relies on the certificate Software Restriction Policy as described herein.

Still further embodiments of the invention enable the certification authority to bind the certificates to the tested software components.

The present invention, according to still further embodiments thereof enables a dynamic generation of the list of games made available to the players without transferring a configuration file or files from the central server to the gaming machines. For example, a method according to an embodiment of the present invention relies on attempting to execute a game component on which a certificate Software Restriction Policy is enforced.

Embodiments of the present invention leverage the technology described in commonly assigned patent application Ser. No. 60/393,892, filed Jul. 5, 2002, in which code signing and Software Restriction Policy enable executing authorized game software. Code signing and Software Restriction Policy (SRP) technologies are available in Microsoft Windows XP, Windows 2000 and Windows 2003, Embedded Windows XP as well as in future Windows versions (as of this writing, the next version is code-named “Longhorn”) to ensure that only executable software components from a trusted publisher, let's say “Microsoft”, are allowed to run. Code signing and Software Restriction Policy technology are applied to executable components such as *.exe, *.dll, *.ocx, *.vbs, *.msi, *.cab, etc. In addition, Software Installation Policy (SIP) ensures that software components are installed in a controlled fashion. Embodiments of the present invention extend the use of code signing, Software Restriction Policy and Software Installation Policy to individual software components that are allowed to execute in a network connected gaming system by associating a distinctive code-signing certificate to each executable software component. Each executable software component version (usually comprising major version, minor version, revision and build) may have a unique certificate. A distinctive certificate may be created for each software component version and the two entities (the compiled code and the certificate) may be bound together by a code signing operation, herein called “signcode.exe.”

Code signed software components may be packaged together with non-signed software components (if any) into a MSI Microsoft installation package (MSI=Microsoft Software Installation). An MSI package is an executable component that in turn receives a distinctive certificate bound to its content by a code signing operation. Only the software component version that has successfully passed the regulatory certification process may be allowed to run by enforcing an unrestricted policy to the associated certificate.

Moreover, embodiments of the present invention extend the use of code signing and Software Restriction Policy to ensure that only authorized non-executable components are used by the authorized executable components. This is of particular value for configuration files or media files that may affect the game outcome such as fixing the return to player at, for example, 95% between 5:00 PM and 11:00 PM, or at 98% during other time periods. For this, non-executable components may be placed in code signed MSI (Microsoft Software Installation) installation packages. Each individual MSI package is an executable component whose execution can be controlled by Software Restriction Policy (SRP). A distinctive certificate may be created for each package version (a part number is created for a preselected aggregate of non-executable components) and the two entities may be bound together by the code signing operation “signcode.exe.” Within the network connected gaming system, trust for non-executable components may be established by executing the associated authorized code signed packages using SRP upon computer startup or alternatively on demand, resulting in the re-installation of the original non-corrupted non-executable components. The non-executable components may be: initialization or configuration files, video files, sound files, multimedia files, file containing list of hashes, CRCs, and/or signatures, for example.

For example, DRM (Digital Rights Management) technology offered by Microsoft Windows Media Player may be used to ensure that only authorized multimedia files may be played or viewed.

Also, RM (Rights Management) technology offered with Microsoft Office 2003, with the associated RM services and SDK (Software Development Kit) may be used to ensure that only authorized data files may be accessed, viewed, copied or modified.

Software Installation Policy (SIP) and Software Restriction Policy (SRP) configured with an individual PKI certificate associated to each authorized software component offer a “Policy/Enforce” model, or in other words a “Configure the Policy and then Enforce the Policy” model to enable network installation (or “game download”) and activation at predetermined times (or “game scheduling”) of selected authorized software components, in order to control the software of the network connected gaming system and offer selected games to players. This “Policy/Enforce” method may be constructed on a demonstrable trusted base; it offers transparent security and fine-grained auditing, contrasting with conventional “Request/Authorize” methods that do not demonstrate reliance on a trusted base to enforce the use of only trusted software components.

A network-connected gaming system comprises hundreds of authorized certified software components that may be selectively downloaded and scheduled. Considering on-going support for 50 customers and for 200 distinctive games over a period of five years, tens of thousands of software components will each need to receive individual certificates and be certified. Accordingly, embodiments of the present invention include an automated certification platform. Herein, such a certification platform is denoted “Integrated Certification Environment” or ICE. Embodiments of such a certification platform according to the present invention are designed to automate the stepping through the procedure that must be done by the regulatory certification authority to produce only authorized software components that may be dynamically installed in a gaming system, and to prevent generation of erroneous software components. In addition, the ICE offers support to selectively enable the download of approved system software components using Microsoft Software Update Services (SUS), for example.

Embodiments of the present methods rely on established security standards and a demonstrable trusted base (as opposed to relying on security by secrecy) in order to offer transparent security and allow fine-grained auditing. Embodiments of the present inventions are also applicable to any of the subsystems available in a network connected gaming system that require preventing non-authorized software components from executing or affecting the game outcome, such as the gaming terminals, the game management system (CMS or MCS) that monitor and control whole or part of the estate of gaming machines, the progressive jackpot systems, the bonusing systems as well as game payment verification systems such as IGT's EasyPay and Cyberview's PVU (Payment Verification Unit) and PVS (Payment Verification System). Gaming subsystems may be tested against gaming standards such as those produced by GLI; the game standards are mandated by game regulators in accordance with local regulation and laws. The network-connected subsystems may be located within the premises accommodating the estate of gaming machine (connection via a LAN) or outside of the premises (connection via a WAN).

Other embodiments of the present invention enable a dynamic configuration of legacy gaming machines, which include PC based and non PC-based gaming machines, gaming machines that do not run a version of Microsoft's Windows® operating system, for example, or do run older, limited, or non secure network enabled operating systems. The PC (called PC proxy hereafter) may be a small-format board and the CPU power is not important as it does not execute the game itself Legacy gaming machines may be of the ROM-based type, CD-ROM based or Read-Only Hard-disk (wherein write mode has been disabled by hardware). New game software is provided for execution by the legacy gaming machine via storage emulation means, the storage emulation means being controlled by a PC-proxy securely receiving downloaded game software from a remote server via a communication network. The storage emulation means and the PC proxy may be located inside the locked cabinet of the legacy gaming machines or otherwise disposed in a location that is inaccessible to the players of the legacy gaming machines. The storage emulation means comprises emulation of read-only devices such as ROM, CD-ROM, read-only hard-disk and re-writable devices such as hard-disk, RAM, NVRAM, Flash memory and other form of electronics rewritable storage devices. Emulation of the NVRAM containing the game critical meters and/or of other non-volatile storage devices containing machine configuration parameters, allows to save the critical meters and/or machine configuration parameters at the state of the last played game, to the PC proxy storage before loading and activating another game, for which the critical meters and machine configuration parameters will have to be either reinitialized or restored from the PC proxy storage to the previous state of the same played game.

An enhancement to the embodiment presented above advantageously provides means to selectively download and activate games, directly from the central system and/or by the player via an auxiliary touch panel directly controlled by the PC proxy. The auxiliary touch panel is added to the legacy gaming machine and may provide enhanced services not available to the legacy machine such as selection of a different game that would cause the storage emulation means to (a) save the current content of the critical meters and the machine configuration parameters at the state of the last played game (b) restore the content of the critical meters and the machine configuration parameters to the state of the same game when last played, (c) load the new game program in the executable emulated memory and (d) reboot the legacy machine. Indeed, as required by regulation, a selection may be authorized only when a player's balance is zero or when a cash-out has been performed. Selection of another game may also only be permitted to authorized personnel using a password or other authentication device. When the legacy machine has completed rebooting, the player may play the game. Another enhanced service provided via the touch panel is the display of the pay table of the currently activated game which is necessary as the pay table originally printed on the pay-glass of the legacy machine is no longer relevant and would have been replaced by non-game related information. The menu selection and/or pay table display panel may be mounted behind the legacy machine glass and in that case, alternative pointing devices directly controlled by the PC-proxy may be used, such as a joy-stick for example. Secondary games may advantageously be provided to the player via the display and selection device that are directly controlled by the PC proxy which in turn may communicate with the central site for obtaining the secondary game outcome. Contrarily to legacy gaming machines for which only a secondary game is possible because it is associated to the game program stored in ROM, secondary games provided via the display and selection device that are directly controlled by the PC proxy may advantageously allow all or part of the downloaded and activated games to participate in the secondary game. A different secondary game may be associated to each downloaded and activated game.

Other peripheral devices may be fitted to the legacy gaming machine that are directly controlled by the PC proxy such as a player tracking card reader, a ticket printer, a ticket/voucher reader, for example, noting that no information is exchanged with the controller of the legacy machine but directly exchanged with the PC proxy which in turn may exchange related information with the central server via the communication network. In general according to game regulation, activation (by the storage emulation means) of a new game may only occur when no player is being carded-in, therefore the player tracking card reader controlled by the PC-proxy may provide such information.

Generally the legacy gaming machines communicate with a casino management system via RS-422 using the antiquated SAS protocol (Slot Accounting System) or equivalent protocol via which the state of the legacy machine is transmitted in real-time. The PC proxy may advantageously intercept the SAS communication such as to extract the necessary information required by gaming regulation before authorizing the selection and activation of a new game. Example of information that may be intercepted are: status of the player tracking read reader controlled by the legacy machine controller if any, activation of the cash-out button, payment to the player completed, player credit balance, rebooting state, etc. . . . . The information therein may allow determining that no player is currently playing, and generally a delay of 5 to 10 minutes remaining in this detected state is required before allowing activation of a new game.

The PC proxy may advantageously control directly a ticket printer such as to dispense a cashless credit instrument that may be redeemed at a cashier or inserted in another gaming machine equipped with a ticket reader. The PC proxy may advantageously control directly a ticket printer such as to dispense a cashless credit instrument.

It is to be noted that all the enhancements and new services to the legacy machine discussed above never require the modification of the original game program and that the exact same image as originally programmed into the ROM (or EPROM), the CD-ROM or read-only hard-disk is executed via the storage emulation means when the associated game is selected and activated.

In another embodiment, peripheral emulation means directly controlled by the PC proxy that may replaces and emulates a legacy peripheral directly controlled by the controller of the legacy gaming machine is provided. An example of a legacy peripheral is a coin acceptor which may be replaced by an emulated version which from one-side offers an interface to the legacy controller that appears electrically and functionally exactly as the original coin-acceptor, and from another side offers a means to accept cashless credit instruments such as a ticket reader; the PC-proxy executing a program to translate the credit captured and validated from the ticket into pulses that emulate coins accepted by the coin acceptor. In the same manner, a bill acceptor may be replaced by an emulated version that accepts cashless credit instruments. In yet the same manner, a coin hopper may be replaced by an emulated version that dispenses cashless credit instruments with a total amounting to the coins normally dispensed and that emulates the sound of the coins dropping into the tray.

As a summary, the emulation of original obsolete devices (read-only storage and peripheral devices) and the interception of real-time data (i.e. SAS) communicated by the legacy gaming machine to the casino management system, without requiring modification of the original game programs, therefore prolongs the useful life of potentially hundreds of thousands of legacy machines which otherwise would be prematurely retired.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates the intrinsic information that uniquely identifies each executable software component, according to an embodiment of the present invention.

FIG. 2 illustrates the information uniquely identifying each executable software component being made available into the Windows Event Log upon execution of the software component, according to an embodiment of the present invention.

FIG. 3 illustrates the information (test certificate indicator, project/product code, type of executable code, part number, major/minor/build/version, certification lab identifier, friendly name) uniquely identifying each executable software component being used to generate the “Subject Name” (or “Issued to” field, or “CommonName” field) of the individual PKI certificate associated to each executable software component, according to an embodiment of the present invention.

FIG. 4 illustrates the information that may be entered in the Extended Attributes of a PKI certificate, according to an embodiment of the present invention.

FIG. 5 illustrates the information that may be obtained using the Trusted Inventory tool, according to an embodiment of the present invention.

FIG. 6 illustrates the information that may be entered to configure a type-certificate Software Restriction Policy rule, according to an embodiment of the present invention. A Software Restriction Policy (SRP) is configured using the Group Policy Object Editor.

FIG. 7 illustrates the policies that are associated to the active directory container used to configure the gaming machines, according to an embodiment of the present invention.

FIG. 8 illustrates an exemplary cycle from the moment a game is being created until it is first executed on a gaming terminal, according to an embodiment of the present invention.

FIG. 9 illustrates the global verification process performed by the terminal in order to check that no unauthorized file may execute or may affect game outcome, according to an embodiment of the present invention.

FIG. 10 illustrates the configuration of the three parties involved in a new game cycle detailed at FIG. 8, according to an embodiment of the present invention.

FIG. 11 illustrates the 12 folders created on the disk repository of the development environment, according to an embodiment of the present invention.

FIG. 12 illustrates the dataflow for step 1 to step 3 for producing the certified authorized software components, according to an embodiment of the present invention.

FIG. 13 illustrates the dataflow for step 4 to step 12 for producing the certified authorized software components, according to an embodiment of the present invention.

FIG. 14 illustrates the grouping of gaming terminals and the associated enforced policies, according to an embodiment of the present invention.

FIG. 15 illustrates a method for enforcing a Software Installation Policy by “linking” the policy, according to an embodiment of the present invention.

FIG. 16 illustrates a method for enforcing a Software Restriction Policy by “linking” the policy, according to an embodiment of the present invention.

FIG. 17 illustrates the method to enforce a policy at a predetermined time, according to an embodiment of the present invention.

FIG. 18 illustrates the method to enforce a selected policy as the result of observing the gaming activity, according to an embodiment of the present invention.

FIG. 19 illustrates the method to generate dynamically the menu list of authorized game made available to the player on each gaming terminal, according to an embodiment of the present invention.

FIG. 20 illustrates the method to generate a code signed companion software component, according to an embodiment of the present invention.

FIG. 21 illustrates the method to quickly generate dynamically the list of game installed on each gaming terminal using the companion software component, according to an embodiment of the present invention.

FIG. 22 illustrates aspects of another embodiment of the present invention in which secure game download and dynamic configuration capabilities are provided to legacy gaming machines.

FIG. 23 illustrates an exemplary cycle from the moment a new game is created until it is first executed on a legacy gaming terminal, according to an embodiment of the present invention.

FIG. 24 illustrates gaming session meters, according to an embodiment of the present invention

FIG. 25 shows a network that includes legacy gaming machine according to an embodiment of the present invention, in which the non-volatile storage device for the critical meters is replaced by an emulated version.

FIG. 26 is a flowchart that illustrates how meters may be safeguarded and loaded into a legacy gaming machine according to an embodiment of the present invention.

FIG. 27 shows a network that includes legacy gaming machine according to an embodiment of the present invention, in which a display and a selection device directly controlled by the PC-proxy is fitted.

FIG. 28 shows a network that includes legacy gaming machine according to an embodiment of the present invention, in which a legacy peripheral device is replaced by an emulated version.

FIG. 29 shows a network that includes legacy gaming machine according to an embodiment of the present invention, in which the PC-proxy intercepts data on the SAS communication link.

DETAILED DESCRIPTION

Reference will now be made in detail to the construction and operation of preferred implementations of the present invention illustrated in the accompanying drawings. The following description of the preferred implementations of the present invention is only exemplary of the invention. The present invention is not limited to these implementations, but may be realized by other implementations.

FIG. 1 illustrates Software Component Identification and Traceability via File Properties, according to an embodiment of the present invention. Shown at 100 in FIG. 1 is the intrinsic information that uniquely identifies each executable software component. The executable component source code comprises executable code lines (e.g. X=X+1; not shown here) and associated source code assembly information 102, 104 that comprises comment lines 106 and assembly information. Herein, AssemblyTitle 108, AssemblyProduct 110 and AssemblyVersion 112 are configured. The AssemblyTitle 108 is set to CyberInv.exe that is the friendly name of the executable software component; AssemblyProduct 110 is set to 0006-00001-00 that is the part number of the executable software component and AssemblyVersion 112 is set to 1.0.1.0, which is the version number of the executable software component. Once the source code is compiled and the executable is built (CyberInv.exe in this case), the configured assembly information is available via the File Property of Windows 114 when right clicking on the file CyberInv.exe and selecting “Properties” and “Version”, as shown at 116. The friendly name is shown in the Description field 118, the part number is shown in the Product Name field 120, 122 and the version is shown in the File Version field 124.

It will be apparent to those of skill in the art of software development that intrinsic information that uniquely identifies each executable software component may be obtained in various combinations of assembly directives and file property fields. Additional information may be configured such as, for example, the software component part number, major version number, minor version number, build number, revision number, project name, type of software component, language variant, game regulation variant, friendly name, identification of the certification laboratory, identification of the client, and other predetermined identification identifiers. The identifiers associated with the executable software component using source code assembly directives may, therefore, be traceable via the File Property features of the Windows operating system.

An example of such a configuration is CST3000-0006-00001-00[1.0.1.0]{21}

11˜9% S CyberInv.exe that comprises a concatenation of identifiers that may be used in a file name or a PKI certificate subject name. According to this example, CST3000 is the marketing system product identification or the project name; 0006-00001-00 is the software component part number; [1.0.1.0] details the software component major version number, minor version number, build number, revision number; {21} is the software component variant identifier;

11 identifies the certification lab that certifies the software component; ˜9 identifies the customer for which this software component is certified; % S is the software component language variant (“S” for Spanish in this example); CyberInv.exe is the software component friendly name for quick identification. Spaces may be used freely and the identifier fields may be written in any order so as to facilitate reading. Identifier fields may be omitted whenever the context already provides such information. The framing or delimiter characters such as [ ], { }, ˜,

% which are allowable characters to be used in file names and certificate subject names facilitate human recognition as well as string searches for particular attributes (global search for all Spanish variants for example).

In the same manner, a selected set of identification information making up the certificate subject name may be used for making up the file name of PKI certificate related files such as *.CER, *.P7B and *.PVK such as to facilitate human identification, string searches and file searches.

FIG. 2 illustrates traceability via the Windows Event Log. Reference numeral 200 in FIG. 2 illustrates the information uniquely identifying each executable software component being made available to the Windows Event Log upon execution of the software component. The Windows Event Log 202 is a repository for logging important events; it is viewed via the Event Viewer 204. Windows default event log bins (or containers) are Application, Security and System. In the illustrated example, an Event Log bin 206 denominated “Cyberscan” has been added. The Cyberscan bin 206 contains traceability information in its “Source” field that is being logged by each of the executable software components. The software executable software component makes use of the Event Log API to “splash” its identification information into the source field of a predetermined bin in the Windows Event Log each time it starts execution, or at any other time should the occurrence of an event be traced, in order to provide an audit trail to be examined by auditors. The part number 214, version 216 and friendly name 212 identifiers associated to the executable software component using source code assembly directives 201 are therefore traceable via the Event Log features of the Windows operating system. Other information associated with the executable software component may be splashed into the event log for additional traceability. The “Type” field 208 may flag an important audit condition such as here “Failure Audit” to alert the auditor.

FIG. 3 illustrates the Certificate “Issued to” Field. Reference numeral 300 illustrates the information 308 (test certificate indicator 318, project/product code 320, type of executable code 322, part number 324, major/minor/build/version 326, certification lab identifier 328, friendly name 330) uniquely identifying each executable software component being used to generate the “Subject Name” 316 (or “Issued to” field 306, 314, or also known as the “CommonName” field) of the individual PKI certificate 304 associated with each executable software component, according to an embodiment of the present invention. The friendly name, part number and version of the executable software components may be substantially identical to those entered in the source code assembly 302. “Subject Name” 316 and “Issued to” field 306, 314 refer to the same information; Subject Name is preferably used hereafter. The certificate authority 312 responsible for generating the PKI certificate is shown in the “Issued by” field 310.

FIG. 4 at 400 illustrates the information that may be entered in the Extended Attributes 408 of a PKI certificate 402, according to an embodiment of the present invention. This information may be viewed by selecting, for example, the “Details” tab 404 of the certificate 402 and selecting “Extensions Only”, as shown at 406. Intrinsic information that uniquely identifies each executable software component may be entered in the extended attributes of a PKI certificate in order to attain the same purpose as described for FIG. 3 as an alternative to entering the information in the certificate Subject Name. In the same manner, additional identification information to those entered in the Subject Name may be entered in the extended attributes.

FIG. 5 illustrates traceability via the Trusted Inventory Tool 504, according to an embodiment of the present invention. Reference numeral 500 in FIG. 5 illustrates the information that may be obtained using the Trusted Inventory tool 504. The trusted inventory tool 504 is a simple application that searches for executable files through the branches of a given tree directory and determines whether the executable software component may be trusted by, for example, calling the Microsoft ChkTrust.exe tool. If the executable software component is signed by a valid PKI certificate and its executable binary data is uncorrupted (its recalculated hash matches the code signature), the ChkTrust.exe tool returns the authenticode “Trusted” attribute; an “Untrusted” attribute is returned otherwise. The Trusted attributes are automatically tabulated in a spreadsheet such as, for example, Microsoft Excel as depicted at 506. Each line 508 in the table provides details on the executable software component that is being examined, such as program path location 510, friendly name 512, executable type 514, authenticode trusted attribute 516, part number 518 and version 520. According to an embodiment of the present invention, therefore, the part number 518, version 520 and friendly name 512 514 identifiers associated with the executable software component using source code assembly directives 502 are traceable via the Trusted Inventory tool.

Reference numeral 600 in FIG. 6 illustrates the information that may be entered to configure a type-certificate Software Restriction Policy rule. A Software Restriction Policy (SRP) 604 may be configured using the Group Policy Object Editor 606. The type-certificate Software Restriction Policy rule 610 may be entered in the “Additional Rules” node 608 of the Software Restriction Policy object 614. In FIG. 6, the part number, version and friendly name configured in the source code assembly 602 are recognizable in the certificate subject name 612.

FIG. 7 illustrates SRP Certificate Rules Policies via the Group Policy Management Console, according to an embodiment of the present invention. Reference numeral 700 in FIG. 7 illustrates the policies that are associated to the active directory container used to configure the gaming machines referenced at 706. Policies are managed using the Group Policy Management Console 702, 704. In this illustration, a policy named “SRP_CyberInv” 708, 710, 712 is selected, for the purpose of viewing a detailed report of the rules that are configured. The report shows details in a hierarchical order. This exemplary policy defines only one certificate rule 716 in the Software Restriction Policy node 714. The certificate subject name 718 is set with a security level 720 of “Unrestricted”, as shown at 722, thus ensuring that only the executable software component identified in the certificate subject name is authorized to execute when the policy 714 is enforced. The SRP path rules 724 must be configured such as to prevent non-authorized software from executing. The policy 708 is enforced when it is linked to its container object 706 herein named “Gaming Machines.”

Reference numeral 800 in FIG. 8 illustrates an exemplary cycle from the moment a game is being created until it is first executed on a gaming terminal, according to an embodiment of the present invention. The flowchart 800 starts at 802 when the decision to initiate a project to develop and release a new game is made. The game developer (Cyberscan here, for illustrative purposes only) 804 develops a new game application 806 whose code must be certified at 810 by a recognized certification lab 808. The certified code must then be signed as shown at 812 using PKI certificates produced by a certificate issuing authority (CA) 814 controlled by a trusted party 816. The trusted party 816 may be the certification lab 808. The signed executable software components may be packaged in code-signed MSI installation packages signed in a manner substantially identical to the executable software components, that is, with a unique PKI certificate whose subject name contains part number, version and friendly name identifiers for the MSI package. The MSI packages together with scripts may then be copied to a removable media, such as a CD-ROM 818 for example.

The game operator 820 receives the CD-ROM and when it decides to deploy the new game 822, it copies the packages and associated scripts from the removable media into a library repository on a server 824 (the DEPLOY server in this case, also shown at 2202 in FIG. 22). The scripts contain automation tasks such as copying to the repository and configuring the policies.

In the case of gaming terminals connected in a LAN, each gaming terminal 826 is controlled by the policies as soon as they are enforced. The Software Installation Policies (SIPs) controlling the installation of the new game automatically execute the MSI installation packages upon policy enforcement, provided the corresponding Software Restriction Policies have been configured to authorize the execution of the MSI installation packages. This process is performed at 828, 830. If no SRP authorizes the execution of the MSI installation packages, the installation is ignored, as shown at 832. When the MSI installation package is authorized to execute, the software components and other files contained in the package may be copied to the gaming terminals, as suggested at reference numeral 834 836. Other configuration tasks may also be carried out during the Microsoft installer installation process such as, for example, setting the Windows registry, setting shortcuts and installing software patches.

Download of the game software components from the game repository to the gaming terminals may occur as soon as the associated Software Installation Policies are enforced (and the SRPs for the MSI installation package is permitted accordingly). Therefore, scheduling of the download may be achieved by simply enforcing the associated software installation policies at a given time; this may be accomplished by having an operator manually enforcing the SIP at a predetermined time via the group policy management console, or having a process automatically enforcing the SIP at a predetermined time via the API to the group policy management console. Enforcing a policy may be achieved by linking the selected policy to the selected policy object in the domain controller active directory.

Game activation 840 that authorizes execution of the game may be achieved by enforcing the associated Software Restriction Policies. In the same manner, scheduled game activation and deactivation in order to offer selected authorized games to the players at predetermined authorized times may be achieved by simply enforcing the associated Software Restriction Policies at a given time; this may be accomplished by having an operator manually enforce the SRP at a predetermined time via the group policy management console, or having a process automatically enforce the SRP at a predetermined time via the API to the group policy management console. Enforcing a policy may be achieved by linking the selected policy to the selected policy object in the domain controller active directory. Alternatively, a selected executable software component may be prevented from executing by configuring its associated SRP security level to “disallowed.”

At this stage, a global verification process 842, 844 as described relative to FIG. 9 may advantageously be executed to verify the trust of every software component installed on the gaming terminal. Should the global verification fail, the gaming terminal may be locked at 846 pending servicing by an attendant.

When a player selects a game from a gaming terminal 838 from a selection menu and requests execution thereof, as shown at 848, the authenticodes of the game's executable software components are verified by the associated enforced Software Restriction Policy as shown at 850 before beginning execution 858. Should the authenticode verification fail at 852, the gaming terminal may be locked at 854 pending servicing by an attendant. If the code is trusted, as verified by the associated enforced SRP, the game is allowed to execute, as shown at 858.

Policy changes are automatically distributed by the Windows server operating system throughout the network connected gaming system at periodic intervals; this automatic process may be disabled if required. Alternatively, the RegisterGPNotification function may be used by the game application software executing on each gaming terminal to check if an applicable group policy has changed. The gaming terminal may then decide on enforcing the policies locally immediately. The gpupdate.exe service, the RefreshPolicy function or the RefreshPolicyEx function may be used by the game application software executing on each gaming terminal to enforce the configured policies. A reboot may optionally be performed in order to recheck the gaming terminal trusted base and ensure the policies have been completely enforced (long game installation for example).

The RegisterGPNotification function enables an application to receive notification when there is a change in policy. When a policy change occurs, the specified event object is set to the signaled state. Further information on the RegisterGPNotification function may be found at: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/policy/policy/registergpnotification.asp. The RefreshPolicy function causes policy to be applied immediately on the client computer. Further information on the RefreshPolicy function may be found at: http://msdn. microsoft.com/library/default.asp?url=/library/en-us/policy/policy/refreshpolicy.asp. The Reesh PolicyEx function causes policy to be applied immediately on the computer. The extended function allows specifying the type of policy refresh to apply to be specified. Further information on the RefreshPolicyEx may be found at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/pol-icy/policy/refreshpolicyex.asp.

The menu of authorized games offered to the player may be dynamically generated by each terminal without requiring the central system to dispatch the list of authorized games or having each terminal fetch the list of authorized games from the central system; this may be done by having each terminal check the policies enforced on the games. This may be accomplished by having a process in each terminal attempt to execute each of the entry point for each game (the parent module which is first called upon selecting a game to play). If the execution succeeds, then the game is authorized and may be added to the games menu offered to the player. If the execution is denied (SRP is unlinked or the security level is disallowed), then the game is not authorized and it is removed from the games menu offered to the player. Similarly, if a game entry software component file is not found, then the software is not installed or has been removed and is removed from the games menu offered to the player. The process of dynamically generating the game selection menu may be optimized in many ways in order to reduce the game time to start overhead to check if it is authorized.

In a casino, although new games may be scheduled to be downloaded to gaming terminals and activated at predetermined times, it is a requirement that games may not be changed while a player is playing. In practical terms, a player is considered to have terminated his or her game play when the player's credit balance remains at zero for a predetermined period of time. The predetermined period time is sufficient for allowing the player to enter a new bill or other form of credit instrument to continue playing. Therefore, the game application software on each game terminal may, according to embodiments of the present invention, continually test for this condition (credit=0 for a predetermined time) before checking for change in policy, enforcing the policy changes and then updating the menu of games to be made available to the next player.

FIG. 9 at 900 illustrates the global verification process performed by a terminal to check that no unauthorized files are allowed to execute or affect the game outcome. This process may be performed by any of the subsystems connected in the gaming systems.

The process may start with a computer cold or hot reboot 902 such that the operating system trusted base may be thoroughly verified before the game software components are verified. The trusted base is detailed in commonly assigned and copending international patent application number PCT/US2002/029927, filed Sep. 19, 2002, the specification of which is incorporated herein by reference in its entirety, and also in Microsoft Next Generation Secure Computing Base (NGSCB), also incorporated herein by reference. Details of Microsoft's NGSCB are located at www.microsoft.com/ngscb. During the trusted base verification, the integrity of the Driver Signing framework, the Windows File Protection framework and Software Restriction Policies framework are verified. With NGSCB operating system such as forthcoming “Longhorn”, a framework called Nexus deeply integrated directly within the hardware components (in each major chipsets) and the BIOS which constitutes a mechanism for authenticating the trustworthiness of the software and hardware configuration, is booted prior to checking the integrity of the Driver Signing framework, the Windows File Protection framework and Software Restriction Policies framework.

On completion of the operating system boot-up 902 or at another time, the global verification process 904 may be executed. The CyberInv process 910, 914 is also shown and described at FIG. 5. The CyberInv process 910, 914 verifies all the executable files in given folder trees such as 912 (*.exe, *.dll, *.ocx, *.vbs, *.bat, *.msi, *.cab, for example) for trustworthiness. If any file is found to be untrusted as shown at 932, then the gaming terminal may be frozen as shown at 934 pending examination by security personnel. A spreadsheet file 916 may be produced that list the verification status of each executable file. If the authenticode of all the files is trusted as shown at 918 then the CyberInv process 908, 910, 914, 924 returns at 920 a trusted status, as shown at 926 930. Consequently, all of the executable software components may be considered to be trusted, as shown at 930.

However, it is to be noted that the fact that an executable software component is trusted does not imply that the software component is authorized to execute; it merely indicates that the software executable software component has a valid authorized authenticode certificate and that the software component binary data is not corrupted. Checking whether an executable software component having a valid authorized authenticode certificate is authorized to execute requires that the applicable Software Restriction Policy be checked. This may be performed automatically when the software component is loaded by the operating system to start its execution, either when dynamically building the menu of authorized games, or each time upon starting execution of the game when the player has selected a game to play—or using an appropriate service that may be called by an application.

Although RM (Rights Management) and DRM (Digital Rights Management) technology from Microsoft is readily available for authenticating the trustworthiness of non-executable files such as media files, Word files and emails, for example, it adds management complexity on top of the Software Restriction Policy framework when used in a network-connected gaming system. Addressing this, embodiments of the present invention offer a method for a network connected gaming system to trust non-executable files such as initialization or configuration files, video files, sound files, multimedia files, file containing list of hashes, CRCs, and/or signatures. The present method relies on packaging the non-executable files in a MSI installation package, the MSI package being subsequently code-signed with a unique certificate and the appropriate Software Restriction Policy is configured to enable installation (execution in fact) of this MSI package. Executable files and non-executable files may be packaged together for convenience. The selected aggregate of executable files and non-executable receives at least a part number (and preferably a version number as well) that is used in the subject name of the associated certificate. Consequently, according to embodiments of the present invention, when the MSI package is installed, the installed non-executable files are obtained from a trusted and authorized source.

As the CyberInv process 908 has authenticated the trustworthiness of all the *.msi files 911, therefore whenever there is a need to ensure that the non-executable files are trusted, the associated MSI package is re-installed. It is to be noted that the service that performs the installation of the MSI packages (msiexec.exe in the current versions of Windows) may be executed with a variety of execution modifiers, such as shown at http://www.microsoft.com/technet/treeview/default.asp?url=/technet/prodtechnol/winxppro/proddocs/msiexec.asp. Of particular interest is the c option that reinstalls a file if it is missing or if the stored checksum of the installed file does not match the new file's value (the log file will contain the anomalies detected for subsequent forensic analysis), as shown at 936. In the global verification process 904, the c option of the msiexec.exec command may be used for re-installing every package containing configuration files 938 (such as initialization or configuration files, files containing list of hashes, CRCs, and/or signatures), Flash files 940 (Macromedia Flash and Director), and other media assets files 942 in order to ensure the trustworthiness of these files.

Subsequent to completion of process 908, all the MSI packages for the executable software components may be re-installed with for example, the msiexec.exe command using the p option in order to re-install missing authorized executable software components (the log file will contain the anomalies detected for subsequent forensic analysis).

Subsequent to the successful completion of the global verification process 904, the trustworthiness of the game application framework is established and may be started, as shown at 906.

It is to be noted that when a player wins an amount equal to or greater than $25,000 or $50,000 in a casino, there is a requirement to check the integrity of the gaming application. With legacy gaming terminals, the gaming terminal is powered-down and the ROMs are extracted in order to be verified in a trusted verifier named a “Kobetron.” The Kobetron produces a signature for each of the ROMs that is compared with the corresponding signature produced by the certification lab. In this manner, the integrity of the all the software components of the legacy gaming terminal, including the operating system, the game application and the configuration data may be verified. According to embodiments of the invention, when executing the global verification process 904 subsequent to the gaming terminal bootup at 902, a verification equivalent to a “Kobetron verification” may be performed. This metaphor helps greatly in the acceptability of downloadable game technology by game regulators who are reluctant to accept state-of-the-art operating systems, multimedia and network technologies.

FIG. 10 at 1000 illustrates the configuration of the three parties involved in a new game cycle detailed at FIG. 8, according to an embodiment of the present invention. The three parties involved in a game cycle, according to embodiments of the present invention, are the game developer 1002 whose facilities are located in a given city 1004, the certification laboratory 1006 whose facilities are located in a given city 1008 and the gaming operator 1010 located in a given city 1012. The game developer 1002 and the certification lab 1006 may have a network 1020 of connected gaming system(s) representative of the network connected gaming system in place at the location (e.g., the casino) of the gaming operator 1010. In addition, the game developer 1010 and the certification lab 1006 each may have an integrated software development environment for compiling the game applications source code, each capable of managing at least 200 games for 50 distinct game operators as shown at 1044, (resulting in thousands of source code variants due to local regulation variances). The development environments may be kept synchronized via the secure network link 1016, 1018, 1014, 1022, 1020. A certification authority (CA) 1040 may be located at the game developer's site or may be controlled by an authorized trusted party such as VeriSign. The game developer site and the certification lab site may be accessible from the outside by authorized mobile users 1034, 1028 via secure links 1022, 1018, 1030, 1036. Logon authentication may be carried out using, for example, smartcards as shown at 1038, 1032 or by other secure means.

The game developer 1002 supplies the certification lab 1006 with a CD-ROM (or other media) containing the software components to be tested, as shown at 1048. The certification lab then certifies the software components supplied on the CD-ROM and provides the game developer 1002 with a CD-ROM containing the certified software components for deployment, as shown at 1046. The CD-ROM 1046 containing the authorized software components that were tested and certified by the certification lab 1006 may then be provided to the game operator (e.g., the casino) for installation and deployment on one or more of the gaming machines GM001, GM002, GM2995 coupled to the network 1024. The certified authorized software components are code-signed using a certificate produced in accordance with an embodiment of the present invention, as described hereinabove. The network 1024 is preferably not coupled to any external network, as suggested at 1026.

FIG. 11 shows a 12-Step Integrated Certification Environment Process, according to an embodiment of the present invention. Shown at 1100 are the 12 folders 1110 created on the disk repository 1102 of the development environment. The 12 folders 1110 are mapped to the 12-step procedure 1104 to 1106 involved in producing the CD-ROM 1050 containing the certified authorized software components. Each folder contains the computer resources and instructions to carry out each step. The folders are clearly named with the step number and the title description of the procedure step at 1108.

FIG. 12 shows a dataflow diagram of Step #1 to Step #3 of the Integrated Certification Environment Processor for producing certified authorized software components, according to an embodiment of the present invention. Step 1 at 1220 may include obtaining a snapshot 1212 of the repository 1204 containing the game developer's source code 1206, data files 1208 and media assets 1210 in order to configure the building environment of the reference platform with all the source code, data files, media asset files and resources files required to initiate the certification process. The snapshoot files 1212 may be stored in a repository 1218 controlled by a version configuration and control system (SCCS) such as Microsoft Visual Source Safe 1214 (VSS) on the DEV development computer 1216. The files may be grouped in project directories as “Projects” such that the source files, control files and resource files are stored in convenient systematic fashion in the Visual Studio repository 1240 on the development computer 1238. An inventory of the files submitted for certification may be produced. Step 1 may be qualified as “SETUP Projects” 1222.

Step 2 at 1232 may include compiling the source code and producing binary executable code. Microsoft Visual Studio 1224 is constructed so as to manage source code as projects (a project can be a given game) regrouping all of the dependent source code, and data files. Step 2 is also referenced as building the projects or “BUILD Projects”, as shown at 1234. Media assets may require a different compiling environment on the DEV computer 1230 such as the Macromedia Director 1228.

Step 3, shown at 1242 may include producing the projects MSI packages 1244 for the source code compiled in Step 2. Relevant non-executable file such as configuration files and media assets may be packaged in MSI packages with the compiled source code. It is to be noted 1246 that packages will be built again (step 8 hereafter) after code signing of EXE, DLL, OCX and other executables (step 6 hereafter). Step 3 may be referenced as “BUILD Packages Pass #1” 1244.

FIG. 13 shows, at 1300, the dataflow for step 4 to step 12 for producing the certified authorized software components, according to an embodiment of the present invention. Step 4 at 1308 calls for the CyberInv.exe process 1306, for a selected project (a Visual Studio project may typically regroup all the software components for an entire game), perform an inventory 1304 of the compiled software components produced by Visual Studio 1302 on completion of the Build Project process 1234 (FIG. 12) as well as the MSI install packages produced by the Build MSI Packages Pass #1 1244 process (FIG. 12). The CyberInv.exe 1306 process may also include any other executable software components not directly managed under Visual Studio such as, for example, ocx, *.vbs, *.bat, *.cab, *js. (In fact, any executable component that is supported by the Software Restriction Policy technology).

The CyberInv.exe process 1306 produces the CyberInv.xls 1307 Excel spreadsheet file 916 shown at FIG. 9, which is examined by an authorized user in the MS Excel program 1310. The CyberInv.xls 1307 file is copied to the folder “Step 4—CyberInv” folder in 1110 in FIG. 11. The binary files having just been compiled are not code-signed; consequently the authenticode field shows an “Untrusted” status for each of the binary components. The friendly name, file type, part number and version (including build number) are extracted directly from the assembly information contained in the source code, therefore truly reflecting the identity of the source code component.

Because the build number is incremented each time the code is recompiled in a Build operation, it is to be noted that the version number will change accordingly. The authorized user eliminates the rows that are irrelevant to the game to be certified and saves the file under the CyberCert.xls 1311 file name which contains the necessary friendly name 512, executable type 514, part number 518 and version 520 information to compose the PKI certificate subject name in accordance with method detailed at FIG. 3 for subsequent code signing. The program path location 510 of the unsigned software components is also available for later retrieval of the unsigned binary file. The CyberCert.xls 1311 file is copied to the folder “Step 5—CyberCert” folder in 1110 in FIG. 11.

The CyberCert.xls 1311 file may be securely copied in encrypted form to a removable media such as a floppy disk, a CD-ROM or a USB disk 1312, or alternatively transferred to another location by secure communication means.

The CyberCert.xls 1311 file is split into 2 files CyberSign1.xls 1317 and CyberSign2.xls 1319. CyberSign2.xls contains only the rows associated to the MSI packages and CyberSign1.xls contains the rows corresponding to the other executable file. CyberSign1.xls is copied to the “Step 6—CyberSign (Pass #1)” folder in 1110 in FIG. 11, and CyberSign2.xls is copied to the “Step 8—CyberSign (Pass #2)” folder.

Step 5 at 1316 includes having a certification authority (CA) 1315 located at the game developers' site or controlled by an authorized trusted party such as VeriSign generating certificates in accordance with the details provided in the CyberCert.xls 1311 file, that is, with a subject name created in accordance with the method detailed relative to FIG. 3. An automated process CyberCert.exe 1318 executing on the off-line CA computer Windows server named CS11 1314 may automate the generation of the PKI public certificates 1326 and the associated private keys 1328 using the CyberCert.xls 1311 file.

The trusted root certificate for the authorized CA 1320 is supplied to the certification lab, the game regulators or other parties for reference and for importing as a trusted root into the ICE computer system and the gaming system certificates store.

The public certificates 1326 and their associated private keys 1328 are forwarded to the DEV computer 1332 of the ICE system in encrypted form on a removable media such as a floppy disk, a CD-ROM or a USB disk 1324, or alternatively transferred by secure communication means. Public certificates 1326 and their associated private keys 1328 that are associated with the MSI packages are copied into the “Step 6—CyberSign (Pass #1)” folder in 1110, and the other public certificates 1326 and their associated private keys 1328 that are associated with other software components are copied to the “Step 8—CyberSign (Pass #2)” folder.

Step 6 1336 includes steps of code signing the non-MSI executable components listed in the CyberSign1.xls 1317 file using the corresponding public certificates 1326 and their private keys 1328. The code signing may be performed using the SignCode.exe utility provided by Microsoft, or equivalent. A password may be required for the private key depending on the security option selected when generating the certificate at the CA. The CyberSign.exe process 1330 may automate the code-signing of all the non-MSI executable components listed in the CyberSign1.xls 1317 file using the friendly name, file type, part number and version (including build number) given in each row. The CyberSign.exe process may call the SignCode.exe utility or the equivalent API. During the code signing process, the compiled executable software components may be replaced at 1339 by their code-signed form. Step 6 is designated as “CodeSign Pass#1” 1338.

Step 7 at 1344 includes re-building all the MSI install packages 1345 performed during step 3 at 1242. This time, the MSI packages contain the non-MSI code-signed executable components.

Step 8 at 1340 includes code signing the MSI executable components listed in the CyberSign2.xls 1319 file using the corresponding public certificates 1326 and their private keys 1328. The code signing may be performed using the SignCode.exe utility provided by Microsoft, or equivalent. A password may be required for the private key depending on the security option selected when generating the certificate at the CA. The CyberSign.exe process 1330 may automate the code-signing of all the MSI executable components listed in the CyberSign2.xls 1319 file using the friendly name, file type, part number and version (including build number) given in each row. The CyberSign.exe process may call the SignCode.exe utility or the equivalent API. During the code signing process, the executable MSI software components may be replaced 1341 by their code-signed form. Step 8 is designated as “CodeSign Pass#2” at 1342. The executable MSI software components are copied as shown at 1371 to the CD Pre-Burn repository 1372.

Because of the necessity of performing step 7, the CyberSign 1330 code-signing process to be used for the ICE (Integrated Certification Environment) is designated a “2-Pass code-sign”, as indicated at 1334.

Step 9 1366 includes (a) configuring the software restriction policy (SRP) 1360 for the ICE system test gaming terminals (via the active directory 1350 in the domain controller DC) with the certificate rules corresponding to the certificate produced at step 5 (the *.p7b certificate at reference numeral 1326 may be converted to *.cert certificates for compatibility reasons when configuring the SRP); (b) configuring the Software Installation Policy (SIP) 1368 for the ICE system test gaming terminals with the MSI packages produced at step 7, then (c) using the GPMC (Group Policy Management Console) or equivalent service, exporting the SIP via SIP export scripts 1362 and the SRP via SRP export scripts 1364 (the policy export facility is available in the Group Policy Management Console GPMC 702, 704). These SIP and SRP export scripts may be copied into the folder “Step 9—SIP & SRP” folder in 1110. These SIP and SRP export scripts may be later imported in the gaming operator's 1010 gaming system for enforcing the policies on the game components. SIP export scripts 1362 and SRP export scripts 1364 are stored in the CD Pre-Burn repository 1372 (or into the folder “Step 10—CD Burn—Casino Release” folder in 1110).

Step 10 at 1374 includes steps of burning at 1384 to a CD-ROM 1376 or other removable media the content of the CD Pre-burn repository 1372 comprising (a) the executable MSI software components 1371; (b) the SIP export scripts 5 1362 and SRP export scripts 1364 and (c) other automation scripts in order to automate the installation of (a) and (b). A copy of CD-ROM 1376 may be forwarded (a) to the gaming operator's 1010 gaming system for game deployment (such as a casino 1379), (b) to the certification lab 1378, and (c) a trusted party 1377 such as a lawyer or in escrow for impartial reference in case of later dispute. The CD-ROM 1376 may later be inserted at 1050 in the gaming operator's 1010 gaming system for game deployment.

Step 11 at 1370 includes steps of (a) taking a snap-shot 1387 of the entire development environment for a selected certified game (Visual Studio repository 1302 and Visual Source Safe repository 1214 1218 that contains all the source file, the compiled code-signed executable files and dependant executable files, the non-executable files, project solution, automation scripts, the source and compiled signed code from other development platforms, the media assets from media development platforms such as MacroMedia Director 1228); in (b) taking a snap-shot 1387 of the code-signed MSI installation packages; in (c) optionally encrypting them; and then in (d) copying them into a CD pre-burn repository 1388 (or into the folder “Step 12—CD Burn—VS Snapshot” folder in 1110).

Step 12 at 1386 includes steps of burning at 1382 to a CD-ROM 1380 or other removable media the content of the CD Pre-burn repository 1388 comprising the software components of step 11. A copy of CD-ROM 1380 may be forwarded to the certification lab 1378 and to a trusted party 1377 such as a lawyer or in escrow for impartial reference in case of later dispute.

Steps 4 to step 12 should be carried out each time a source code is being recompiled subsequent to a modification because a unique certificate must be associated to each build. Deviating form this order may jeopardize certificate integrity because of the risk of a human error that may result in the wrong certificate being used during the code signing process.

FIG. 14 illustrates assignment of policies by banks of gaming machines. Reference numeral 1400 in FIG. 14 shows the grouping of gaming terminal and the associated enforced policies. In this illustration, the Group Policy Management console 1402 may be configured such that the active directory Organization Unit (OU) named “Gaming Terminals—Floor” at 1404 is architectured to regroup the gaming terminals in “banks” or sub-Organization Units (sub-OUs) identified by 200A0x 1406, 200B0x 1408, 200C0x 1410, and 200D0x to 200K0x at reference numeral 1412. Each bank contains a predetermined number of gaming terminals, in multiples of 8 units, for example.

Noting the hierarchical tree composed of the OUs and sub-OUs illustrated at 1400, all the policies 1414 apply to the OU “Gaming Terminals—Floor” 1414 which contains all the sub-OUs 1406 1408 1410 and 1412. Using this technique, all the policies 1414 may apply to all the 3000 gaming terminals of a large casino. In the same manner, the policies 1416, 1418 apply to the bank 1406; the policies 1420, 1422 apply to the bank 1408; and the policies 1424, 1426 apply to the bank 1410.

In the illustration, the exemplary game named “Roulette” is assigned a policy named “Sbm1.5—SIP—Roulette (GLI)” 1416 which configures the Software Installation Policy (SIP) and a policy named “Sbm1.5—SRP—Roulette (GLI)” 1418 which configures the Software Restriction Policy (SRP) for that game.

In the same manner, the exemplary game named “Infinity” is assigned a policy named “Sbm1.4—SRP—Infinity (GLI)” 1424 which configures the Software Installation Policy (SIP) and a policy named “Sbm1.4—SRP—Infinity (GLI)” 1426 which configures the Software Restriction Policy (SRP) for that game.

The keyword “Sbm1.4”, in this example, denotes the certification submission number 1.4, and the keyword “GLI” denotes the certification lab GLI (Game Laboratories International) approving the Infinity game software.

In the illustration, all of the game terminals regrouped in the bank 200A0x shown at 1406 are, therefore, configured to execute the Roulette game, all the game terminals in the bank 200B0x shown at 1408 are configured to execute the Roulette game and the Infinity game, and all the game terminals in the bank 200C0x shown at 1410 are configured to execute the Infinity game.

FIG. 15 shows the enforcement of a Software Installation Policy (SIP). In FIG. 14, banks of gaming terminals are configured to execute authorized games using SIPs and SRPs policies. However, in order for the gaming terminals to be able to install a game, the associated Software Installation Policy must be enforced. At 1500, FIG. 15 illustrates a method for enforcing a Software Installation Policy by “linking” the policy, according to an embodiment of the present invention. This is accomplished in the Group Policy Management console 1502 by, e.g., right-clicking the selected policy 1504, 1506 “Sbm3.3—SIP—INFINITY_(—)95” associated to the Infinity game with a Return To Players (RTP) percentage of 95% and selecting the “link Enabled” attribute 1514. The software components for the Infinity_(—)95 game contained in the two MSI installation packages 1510 and 1512 will subsequently be installed, provided the associated SRPs are configured to authorize execution of these two MSI packages (refer to description for FIG. 16). Alternatively, the same procedure may be automated via an API called from an appropriate application. It is to be noted that the linking of the policy will in fact enable the enforcement of the policy, but the policy will only be enforced on the gaming terminal when a gpupdate command or equivalent command is performed at the terminal; a terminal reboot may also be required for the policy to be enforced. Also to be noted is that policy changes are automatically distributed by the Windows server operating system throughout the network connected gaming system at periodic intervals; this automatic process may preferably be disabled such as to obtain more predictable policy enforcement changes by issuing explicit commands instead.

Package 1512 (friendly name: Infinity95.msi) contains the executable software components for the Infinity game and package 1510 (friendly name: Infinity95.Config.msi) contains the configuration files (the non-executable files) for the Infinity game. Package Infinity95.Config.msi 1510 is re-installed in the process 938.

FIG. 16 illustrates the enforcement of a Software Restriction Policy (SRP). In FIG. 14, banks of gaming terminals are configured to execute authorized games using SIPs and SRPs policies. However, in order for the gaming terminals to be able to execute the games, the policies must be enforced. FIG. 16 at 1600 illustrates a method for enforcing a Software Restriction Policy 1608 by “linking” the policy. This is accomplished in the Group Policy Management console 1602 by, e.g., right-clicking the selected policy 1604, 1606 “Sbm3.3—SRP—INFINITY_(—)95” associated to the Infinity game with a Return To Players percentage (RTP) of 95% and selecting the “link Enabled” attribute 1624.

The certificate rules 1610, 1616 and 1620 that are configured with the “Unrestricted” attribute 1618, 1622 authorize the installation of the software components for the Infinity_(—)95 game contained in the two MSI installation packages 1510 and 1512 by authorizing the unique PKI certificate associated to those MSI produced in accordance with the present method. The “.dll” executable software component 1612 is authorized, has its security level attribute set to “Unrestricted” and is, therefore, authorized to execute once it is installed.

The two MSI installation packages 1510 and 1512 for installing the software components for the Infinity_(—)95 game have their associated unique PKI certificate 1616 and 1620 (produced in accordance with the method described herein) configured with the “Unrestricted” security level attribute 1618, 1622 via the certificate rules 1610, thus enabling (or authorizing) execution and installation of the software components for the Infinity_(—)95 game.

The “.dll” executable software component contained in the 1512 package has its security level attribute set to “Unrestricted” thus it is authorized to execute once it is installed.

Alternatively, the same procedure may be automated via an API called from an appropriate application. It is to be noted that the linking of the policy will in fact enable the enforcement of the policy, but the policy will only be enforced on the gaming terminal when a gpupdate command or equivalent command is performed at the terminal; a terminal reboot may also be required for the policy to be enforced. Also to be noted is that policy changes are automatically distributed by the Windows server operating system throughout the network connected gaming system at periodic intervals; this automatic process may preferably be disabled such as to obtain more predictable policy enforcement changes by issuing explicit commands instead.

FIG. 17 illustrates a method at 1700 to enforce a policy at a predetermined time, according to an embodiment of the present invention.

Enabling enforcement of policies as described relative to FIG. 15 and FIG. 16 may be carried out interactively by an authorized user at predetermined authorized times, or alternatively may be controlled by a process at predetermined authorized times via the appropriate API. At the central system 1702 (the game download server in this illustration) at a given time 1704, a user or a process may verify a change 1706 in the list of games to be made available to players on a selected set of gaming terminal banks. In case of a schedule change as shown at 1710 (or other reasons such as introducing a new game or revoking an existing game), policies on the domain controller 1714 are being changed accordingly either interactively by a user in the Group Policy Management console as described for FIG. 15 and FIG. 16, or by a process via the equivalent APIs 1712. The changed policies are being enabled for enforcement at 1716 in the domain controller.

In a casino, although new games may be scheduled to be downloaded to gaming terminals and activated at predetermined times, it is a requirement that games are not to be changed while a player is playing. In practical terms, it is considered that a player terminates playing when his or her credit balance remains at zero for a predetermined period of time. The predetermined period time should be sufficient to allow the player to enter a new bill or other form of credit or payment instrument to continue playing. Therefore, the game application software on each game terminal continually tests for this condition (credit=0 for a predetermined period of time) before checking for change in policy, enforcing the policy changes and then updating the menu of games to be made available to the next player.

Upon power-up, each gaming terminal 1718 executes a boot 1720, loads its operating system 1722 and enforces the policies 1724 that are configured at the time of the start-up process. When the game application starts at 1726, it displays a menu of authorized activated games as shown at 1727 to the player using for example the dynamic method described relative to FIG. 19. Whenever the player balance is non-zero 1728, 1730, the player may play as shown at 1732 the games listed on the menu in accordance with the enforced policies. When the player's balance reaches zero at 1734 and remains zero for a predetermined period of time, it is considered that the player is no longer playing. The gaming application of the gaming terminal may then verify at 1736 if a policy has changed 1738. This may be done via the RegisterGPNotification. The RegisterGPNotification function enables an application to receive notification when there is a change in policy. When a policy change occurs, the specified event object is set to the signaled state. Additional details regarding the RegisterGPNotification function may be found at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/policy/policy/registergpnotification.asp.

At 1740, if there is no change in policy, the games listed on the menu will be unchanged for the next player. If there is a change in policy at 1742, the gaming terminal may enter into a process whereby the policies are enforced as shown at 1744, using for example the gpupdate.com service, the RefreshPolicy function or the RefreshPolicyEx function, or equivalent services or API. It is to be noted that the verification of change in policy and the enforcement of the changed policies may be carried out by each terminal independently.

The RefreshPolicy function causes policy to be applied immediately on the client computer. Additional details regarding the RefreshPolicy function may be found at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/policy/policy/refeshpolicy.asp

The RefreshPolicyEx function causes policy to be applied immediately on the computer. The extended function allows specifying the type of policy refresh to apply. Additional details regarding the RefreshPolicyEx function may be found at http://msdn.microsoft.com/library/default. asp?url=/library/en-us/policy/policy/refreshpolicyex.asp

Once the change in policy is enforced at 1744, the gaming terminal may reboot as shown at 1748 or exit and re-enter the gaming application, which would dynamically recreate the menu list of games 1727 to be made available to the next player, as detailed at FIG. 19.

A similar method relying on explicit WMI calls and administrative templates (*.adm) may be applied to obtain the same result in gaming environments whereby the domain controller active directory is not available such is the case with gaming terminals connected in WAN (Wide Area Network) whereby the network bandwidth is limited or the network availability is poor.

An alternative method relying on SMS (System Management Server) code download instead of SIPs (Software Installation Policy) for installing software components and software MSI packages may be used. However, the executable software components remains under SRP (Software Restriction Policy) in accordance with the unique PKI certificate generated for each component as described in the invention.

FIG. 18 shows a close-loop enforcement of a policy, according to an embodiment of the present invention. FIG. 18 at 1800 illustrates a method to enforce a selected policy as the result of observing the gaming activity. The method is directly derived from FIG. 17 whereby the policy change 1716 takes place at 1804 and is selected from a choice of pre-configured policies, for example in a look-up manner, whereby a policy would result in making available to the players a menu of games 1812 (1727 in FIG. 17) to provoke a given gaming activity change which may be monitored in real-time at 1816. The observed activity 1818 may then be compared 1820 to predetermined businesses objectives 1822 and a correction or modification may be applied by selecting a new policy that would change the list of games available on a selected aggregate of gaming terminals 1810. For example, due to a long queue of people who want to play the Infinity game, a greater number of banks of gaming terminals may be configured to make the Infinity game available to players on these terminals. Another reason for applying a new policy might be if a particular area of the casino floor is heavily populated with players while another area is empty. Suppressing some popular games in a highly frequented area and adding them to the less frequently area may help spread the player distribution within the casino or gaming area more evenly. Yet another reason for applying a new policy could be if the gaming activity is low, then games with a higher RTP (return to player), let us say 98% instead of 95%, may be activated in some areas to boost activity.

The process may involve several subsystems as illustrated in FIG. 18: the central game control 1802 wherein policies are selected, the domain controller 1806 that enables enforcement of the policies 1808, a selection set of gaming terminals 1810 wherein each gaming terminal enforces the policies and make the selected games available to the player 1812, a central game monitoring system 1814 that produces activity reports in real time 1816.

The process shown at 1820 of comparing the observed activity 1818 and the targeted activity 1822 and then selecting a change in game policies 1804 may be carried out by the floor manager or the floor director, or alternatively by a knowledge base process. In both cases, a close-loop enforcement of policies (relying on the unique PKI certificate SRP associated to each executable authorized and certified software component) is achieved resulting in the dynamic configuration of the gaming system, either for LAN configurations (such as casino floors) or WAN configuration (such as video lottery terminals distributed across a large geographic area).

FIG. 19 at 1900 illustrates a method to generate dynamically the menu list of authorized games made available to the player on each gaming terminal, according to an embodiment of the present invention. The dynamic configuration of a large gaming system whereby authorized games made available to players on selected group of gaming terminals using software restrictions policies at the central system may result is hundreds of different game menus. Reliance on SRPs for preventing non-authorized software components to execute is entirely based on a sound and demonstrable trusted base; therefore the gaming system is trusted. Getting the list of authorized games to each gaming terminal would require configurations files to be sent from the central system to each of the gaming terminal; however, this would be illegal because the change in the list of games may affect the game outcome. This is clearly understandable when considering changing a game; let us say Infinity_(—)95 with a RTP or 95% with Infinity_(—)98 with a RTP of 98% at 10:00 PM, then back at 8:00 AM, and this each day except during the weekend, or at other times as a result of the closed loop process described at FIG. 18. Game regulators mandate that the process to manage this type of change be certified with secure means of the same order as when installing/downloading software components using a unique PKI method.

Embodiments of the present invention, therefore, provide secure means to update a list of authorized games to be offered to the player. The menu of authorized games offered to the player may be dynamically generated by each terminal without requiring the central system to dispatch the list of authorized games or having each terminal fetch the list of authorized games from the central system (both are illegal without extreme precaution of the same order as the installing/downloading of software components using a unique PKI method because they may affect the game outcome); this is achieved by having each terminal checking the certificate Software Restriction Policies enforced on the games (a unique PKI certificate being generated for each of the executable game components in accordance with the methods detailed in this document).

As illustrated in FIG. 19 at 1900, each terminal when executing the gaming application 1902 gets a list of the file names for the games available at 1904 from a trusted configuration file (an updated trusted configuration file may have been downloaded in a certified code signed MSI package with the last game download) and a menu is initially compiled for this list. Attempts to execute each of the game entry module of the games contained in the list 1906 are made. If the game entry module is not found at 1910, the software components do not exist on the gaming terminal and the game is removed from the menu 1912, whereupon the process iterates to next game, as suggested at 1926 1928. If the execution of the game entry module is denied at 1916, 1918 because the Software Restriction Policy is preventing this game to execute, the game is removed from the menu as shown at 1920 and the process iterates to next game, as shown at 1926 1928. If the execution of the game entry module is successful at 1922, then the game is authorized and may be added to the games menu offered to the player. The process iterates through other games in the list, as shown at 1928, 1930, 1942, 1906, if any. Once the iteration is completed at 1932, the games menu may be composed at 1934 and the menu is displayed to the player at 1936.

FIG. 20 shows a companion Hello component, according to another aspect of the present invention. Reference numeral 2000 in FIG. 20 illustrates a method to generate a code signed companion software component. Each game comprises an aggregate of executable and non-executable software components, usually comprising files such as *.exe, *.dll, *.dat, *.xml. In general, all the software components are dependent of one component named the main program or the game entry. Starting the execution of the main game component is a lengthy process, as a large number of dependent executable components and graphics need to be verified (SRP verification) and started. Currently, there is no API available in the Windows operating system client computer for verifying the status of a Software Restriction Policy enforcement on a given software component applicable to that client computer.

Another embodiment of the present invention, therefore, provides a method to quickly verify the policy enforcement on a game without starting the entire game, in order to generate the list of available games to be made available to the player in a menu. For each game, a very short companion .dll file may be created having, for example, only one line of code <<Return “HELLO”>> which would return the exemplary “HELLO” string when called. Assuming “Infinity.dll” 2010 is the main game component file name 2002 (or friendly name), then the companion file may be named “Infinity.Hello.dll” 2018. Preferably, the companion's 2018 source code would have in its assembly information a part number 2004 as shown at 2020 and a version number 2006 as shown at 2022 that is identical to the main component 2010 part number 2012 and a version number 2014, but this is not mandatory. In addition, assuming the PKI certificate's subject name 2008 associated to the Infinity.dll is “GDS.exe.0099-0001-00[1.0.101.0] Infinity.dll” 2016, which is used for the code signing of the Infinity.dll, we may proceed with the code signing of Infinity.Hello.dll with the same 2026, 2028 “GDS.exe.0099-0001-00[1.0.101.0] Infinity.dll” certificate, as shown at 2024.

It is to be noted that code signing two distinct software executables with the same certificate is a deviation from the method taught earlier in this document. However, the fact that the role of the companion file is very well defined, as having for example only one line of code <<Return “HELLO”>> which would return the “HELLO” string when called, this does not present an issue with the regulators or the certification lab.

FIG. 21 shows steps that may be carried out to search for games on each gaming terminal, according to yet another embodiment of the present invention. Reference numeral 2100 in FIG. 21 illustrates a method to quickly generate dynamically the list of games installed on each gaming terminal using the companion software component described above. The process of dynamically generating the game selection menu may be optimized in many ways in order to reduce the overhead of starting the execution of a game to check if it is authorized. However, if the aim is to sense for the enforced SRP or SIP applied to the game or detect local availability of the game software components, then such optimizations (among other possible variations) should be considered to be within the scope of the invention as defined by the claims hereunder. According to an embodiment of the present invention, a method is presented herewith to quickly generate the list of available games to be made available to the player in a menu without transfer of a file from the server. Reference 2100 is identical to reference 1900 in FIG. 19 except for the first process 2104 whereby a file search process is performed for finding (or enumerating) file names with the “*Hello.dll” string, the “*” symbol being the standard wild character used in string searches. A list of the games installed on each gaming terminal may be quickly and dynamically generated by calling the companion software component of the game main component instead of calling the main component itself. The companion component may be as detailed at FIG. 20 or may be a similar construct.

The embodiments of the present invention described herein are also applicable to any of the subsystems available in a network connected gaming system that require preventing non-authorized software components to execute or affect game outcome, such as the gaming terminals, the game management system (CMS or MCS) that monitor and control whole or part of the estate of gaming machines, the progressive jackpot systems, the bonusing systems as well as game payment verification systems such as IGT EasyPay and Cyberview PVU (Payment Verification Unit) and PVS (Payment Verification System). Gaming subsystems are tested against gaming standards such as those produced by GLI (Game Laboratory International); the game standards are mandated by game regulators in accordance with local regulation and laws. The network-connected subsystems may be located within the premises accommodating the estate of gaming machines (connection via a LAN) or outside of the premises (connection via a WAN).

The methods described in the document rely on software installation policies and Software Restriction Policies which may be configured (a) via the domain controller active directory, as this is advantageously the case whenever the network connection is a LAN, and which may also be configured (b) to each of the local computers via WMI services (Windows Management Instrumentation) or administrative templates (.adm files) in order to configure and enforce local group policies when a domain controller is not available as this is the case whenever the network connection is a WAN. Microsoft SMS (Systems Management Server) may be used as an alternative to using software installation policies.

The methods described in the document leverage on software installation policies and/or software restriction policies technology implemented in Microsoft Windows operating system. Whenever similar technology is implemented in other operating systems such as Linux, Unix, Windows CE and QNX, it is considered as part of the invention herein.

In an other embodiment of the invention, in order to make game regulators more at ease with the huge shift in paradigm from prehensile physically secured ROM based gaming machines (whereby access to the ROM is via multiple layers of keys locks and tamper detectors), to a totally virtual or volatile fashion of downloading game code via a network, it may be advantageous to perform download of the game code when the gaming machine is not operational. Consequently, the network downloading of game code from a central repository may not interfere with the games. This may be accomplished by terminating all gaming software in order to transform the gaming machine into a generic PC, then transferring the game software under the control of the operating system using pervasive network code download available in most information technology networked environments. An “Out-of-service” message may be displayed on the screen to indicate that the machine is no longer playable, thus is no longer a gaming machine. Once the game code is downloaded by the generic PC, the game code is verified for trustworthiness and is executed, thus transforming the generic PC back into a gaming machine.

FIG. 22 illustrates aspects of alternative embodiments of the present invention in which legacy gaming machines are provided with the full functionality of the embodiments of the present invention described above, including fully secure game download and dynamic configuration capabilities. As shown in FIG. 22, a plurality of legacy gaming machines 2208, 2228, 2248, 2268 and 2290 may be coupled to a deploy server 2202 over a network 2206. Within the context of the present invention, a legacy gaming machine may be defined to include gaming machines that are not controlled by a PC based computing device, are not configured to support the policy/enforce model described above and/or are gaming machines that do not run a recent version of the Windows® Operating System and/or are not configured to support Active Directory. Such gaming machines typically may not include a PC suitable for implementing the above-described functionality. The legacy gaming machines may include a hard disk drive, as shown at 2216, 2294 (although the ability of the drive to write to the media may have been disabled by, e.g., a jumper), an optical drive (e.g., CD-ROM) as shown at 2226, a Read Only Memory (ROM or EEPROM) as shown at 2246 or several ROMs and/or EEPROMs, as shown at 2266. Each of the ROMs 2246 and 2266 may include the executable code and/or media files for a single game or may be suitably partitioned to include the executable code and/or media files for more than one game to be made available to the player on the legacy gaming machine. Each of the legacy gaming machines 2208, 2228, 2248 and 2268 are housed in a secured, locked cabinet that conforms to local gaming regulations.

According to an embodiment of the present invention, each of the legacy gaming machines may be provided with a computing device that is configured to support the policy/enforce model described above. For example, each of the legacy gaming machines 2208, 2229, 2248 and 2268 may be provided with a computing device (such as a PC, for example) that is configured to run, for example, a recent version of the Windows® Operating System and that is configured to support Active Directory. As shown in FIG. 22, each PC 2210 may be disposed within the secured and locked enclosure of the legacy gaming machines 2208, 2228, 2248 and 2268. The PC 2210 may be a compact embedded industrial PC board, a compact PC box, or equivalent small size factor PC (e.g. handheld devices running an embedded version of Microsoft Windows such as embedded XP, Windows CE®, Windows Mobile, Windows SmartPhone, enabled to be controlled from an active directory for enforcing policies). The PC may be provided with a local password that may be (e.g., randomly) configured by a central server. Each of the PCs 2210 may be provided with local persistent storage including, for example, a hard disk drive, flash memory and/or other forms of persistent readable and writable memory. An Application Program Interface (API) 2214 intermediates communication between the PC 2210 and the legacy gaming machine software, storage and electronics. Preferably, the API should be examined by the appropriate local gaming authorities and appropriately certified. For ease of reference below, the PC 2210 will be referred to as the “PC proxy” herein below. Advantageously and according to an embodiment of the present invention, each of the legacy gaming machines 2208, 2228, 2248, 2268 is simply seen, from the deploy server's 2202 point of view, as another (e.g., Windows®) PC, and no longer as a legacy gaming machine.

Functionally, the PC proxy may be configured to communicate with the deploy server 2202 and the deploy server library 2204 to enable the legacy gaming machine to enforce policies set by the deploy server and to implement functionality for which the legacy gaming machine was not originally configured. In particular, the proxy PC may enable new software, updates and/or media files (for example) to be securely downloaded and installed onto the legacy gaming machine in a fully secure, trusted and auditable manner. In particular, embodiments of present invention enable new software to be packaged and wrapped in a secure (by a certificate, for example) package and downloaded to the PC proxy 2210 within the legacy gaming machine, as if the legacy gaming machine had that native capability—that is, as if it were not a legacy gaming machine. According to one embodiment of the present invention, the secure package may be or include a code signed MSI installation package. The MSI package may then be verified in the manner described above, unpacked and transferred from the PC proxy's local storage 2212 to the legacy gaming machine's own storage via an API, as referenced at 2214. As the transfer occurs within the secured and locked physical cabinet of the legacy gaming machine, the transfer is controlled, trusted and secure.

According to an embodiment of the present invention, the code that is wrapped in the MSI package that is downloaded from the deploy server library 2204 to the proxy PC by the deploy server 2202 (or pulled from the deploy server 2202 by the proxy PC 22210) may not be compatible and/or executable to the proxy PC itself. Indeed, the files contained in the MSI package may be considered, from the PC proxy's point of view, to be data files, as they are not compatible with or executable by the PC proxy. Therefore, the individual software components wrapped in the code signed MSI installation package need not be code signed themselves. According to an embodiment of the present invention, only the MSI package itself may be code-signed with a unique certificate and the appropriate Software Restriction Policy is configured to enable installation (execution) of this MSI package. The selected non-executable (non-executable to the PC proxy, but executable to the legacy gaming machine) files may receive at least a part number (and preferably a version number as well) that is used in the subject name of the certificate associated with the MSI package. Consequently, according to embodiments of the present invention, when the MSI package is installed within the PC proxy 2210, the certificate may be verified in the same manner as described above. Information similar to that shown and detailed relative to FIG. 3 may be attached to the MSI package. Therefore, the non-executable (to the PC proxy) files that were unwrapped through the execution of the MSI package may now be trusted as having been obtained from a trusted and authorized source—namely; the deploy server library 2204. After the MSI package has been unwrapped and verified (the installation will fail if the verification fails), the API 2214 may transfer the constituent software components of the unwrapped MSI package from the PC proxy local storage 2212 to the persistent storage of the legacy gaming machine as needed and installed. Note that no communication is necessary between the PC proxy and the deploy server 2202 when the MSI package is installed.

According to an embodiment of the present invention, when the API is to transfer the files wrapped in the MSI package to the legacy gaming machine, a preliminary step may be carried out to execute the MSI, which automatically verifies (e.g., checks its certificate) and unwraps it. If the MSI package is corrupted, the installation will fail and the API will not be able to transfer the contained files to the legacy gaming machine.

Many legacy gaming machines do not include writable storage or the write features of the storage may have been disabled, as it is typically not allowed to reprogram the storage on the casino floor. Some legacy gaming machines include one or more ROMs (on the legacy gaming machine's motherboard, for example) on which the game software (including executables, configuration and/or media files, for example) may be stored. Typically, the ROM(s) and/or Electrically Erasable ROM(s) (EEPROM(s)) are produced, or are received from a supplier and then are checked by an approved game laboratory. After the ROMs have passed the prescribed gaming laboratory tests, they may be clearly marked and/or sealed with unalterable or tamper-evident labels. To enable such legacy gaming machines to receive new trusted software components, embodiments of the present invention include provisions for one or more ROM emulators. The ROM emulator(s) are disposed within the secured locked cabinet of the legacy gaming machine and subject to the same physical security within the enclosure as are the legacy gaming machine's own native ROM(s), whereby access to the ROM emulator(s) may be restricted by multiple layers of keys locks and tamper detectors. The API 2214 may then communicate with the ROM emulator, as referenced at 2244 in Fig. FIG. 22. The ROM emulator may be coupled to the proxy PC 2210 in any known manner such as, for example, an Ethernet or serial port. If the legacy gaming machine includes more than one ROM, a multi-ROM emulator may be used, or the legacy gaming machine may be configured with a corresponding number of separate ROM emulators. The ROM emulator duplicates (provide an emulation of) the functions of the legacy gaming machine's ROM, so that the emulated ROM appears, to the legacy gaming machine, to behave like the legacy gaming machine's own native ROM. In effect, providing one or more ROM emulators within the locked enclosure of the gaming machine and in communication with the API 2214 and with the PC proxy 2210 enables the legacy gaming machine to emulate a manual change of the ROM(s) and/or EEPROM(s). This emulation uses a secure ROM/EEPROM emulator 2244 whose software image may be downloaded through the trusted and secure mechanism described herein, through code signed MSI installation packages downloaded from a deploy server to the PC proxy 2210 disposed within the secure and locked enclosure of the legacy gaming machine. In this manner, the ROM/EEPROM emulator(s) 2244 effectively bypass the existing ROM(s) and/or EEPROM(s) within the legacy gaming machine. According to an embodiment of the present invention, in the case wherein the legacy gaming machine includes a plurality of ROMs and/or EEPROMs, the ROM/EEPROM emulators or the multi ROM/EEPROM emulators bypass selected ones of the ROM(s)/EEPROM(s) by plugging an emulator probe into each of the ROM(s)/EEPROM(s) to be emulated.

The combination of the PC proxy 2210, the API 2214 and the ROM emulator (if one is needed) provides the legacy gaming machine with powerful new functionalities. For example, the local storage of the PC proxy 2210 may store a plurality of MSI packages (or equivalent digital certificate-bound package), each of which may impart the legacy gaming machine with new or updated functionality. For example, each legacy gaming machine may display a menu of authorized games that is dynamically generated without requiring the deploy server 2202 to dispatch the list of authorized games or having each legacy gaming terminal fetch the list of authorized games from the deploy server 2202. This may be done by having each legacy gaming machine check the policies enforced on the games by, for example, having a process in each legacy gaming terminal attempt to execute the entry point for each game. Download of any required code signed MSI installation package(s) from the deploy server library 2204 may occur as soon as the associated Software Installation Policies are enforced (and the SRPs for the MSI installation package is permitted accordingly). Therefore, scheduling of the download from the deploy server 2202 to the PC proxy within the legacy gaming machine may be achieved by simply enforcing the associated software installation policies at a given time; this may be accomplished by having an operator manually enforcing the SIP or having a process automatically enforcing the SIP at a predetermined time via the API. Enforcing a policy may be achieved by linking the selected policy to the selected policy object in the domain controller active directory. Note that the downloads of MSI packages from the deploy server library 2204 to the PC proxy within the legacy gaming machine may be carried out while a player is playing the legacy gaming machine. If the execution of the MSI package succeeds, then the game is authorized and may be added to the games menu offered to the player. If the execution is denied (SRP is unlinked or the security level is disallowed), then the game is not authorized and it is removed from the games menu offered to the player. Similarly, if a game entry software component file is not found, then the software is not installed or has been removed and is removed from the games menu offered to the player. The process of dynamically generating the game selection menu may be optimized in many ways in order to reduce the game time to start overhead to check if it is authorized.

When the player selects a game from the dynamically generated menu of games available on the legacy gaming machine, the proxy PC 2210 may select the corresponding MSI package (or equivalent secure package) stored in its local storage 2212, unwrap (unpack) it (and, in so doing, check its certificate) and transfer the contents thereof to the ROM emulator 2244 for execution. Alternatively, the appropriate MSI package may be fetched by the PC proxy 2210 from the deploy server library 2204 through the deploy server 2202 if the MSI package corresponding to the requested game is not present in the PC proxy's local storage 2212. Thereafter, the fetched MSI package may be checked, unpacked and transferred locally from the PC proxy's local storage 2212 to the writable store and/or ROM emulator of the legacy gaming machine via the API 2214, from within the secured cabinet of the legacy gaming machine.

Game activation and deactivation may be carried out within the legacy gaming machine in the same manner as described above. Specifically, game activation that authorizes execution of the game may be achieved by enforcing the associated Software Restriction Policies. Enabling enforcement of policies as described relative to FIG. 15 and FIG. 16 may be carried out interactively by an authorized user at predetermined authorized times, or alternatively may be controlled by a process at predetermined authorized times via the appropriate API. At the deploy server 2202, a user or a process may verify a change in the list of games to be made available to players on a selected set of the legacy gaming machines. In case of a schedule change (or for other reasons such as introducing a new game or revoking an existing game), policies on the domain controller may be changed accordingly either interactively by a user in the Group Policy Management console as described for FIG. 15 and FIG. 16, or by a process via equivalent APIs. Note that the policy to be enforced by each of the legacy gaming machines may be changes in a closed loop manner, as described relative to FIG. 18.

Each code signed MSI package is verified each time that it is executed. Should the verification fail, so would the execution of the installation package. However, a global verification procedure may be forced on the legacy gaming machine(s) in a manner similar to that shown in and described above relative to FIG. 9. Such a global verification procedure may be configured to verify each of the MSI packages stored in the PC proxy's local storage 2212. For example, this global verification procedure may be carried out by forcing a reboot of the PC proxy 2210 and optionally a reboot/restart of the legacy gaming machine. Indeed, the PC proxy may be configured to check the certificates of each MSI package (e.g., to check all files having the .msi extension or functional alternative) stored within its local storage. Should any of the locally stored MSI packages fail verification, execution (e.g., installation) thereof would be prevented and/or the MSI package itself deleted or otherwise disabled. From the foregoing, it is apparent that the MSI packages stored in the PC proxy's local storage are secure and may be trusted.

It is to be noted that when a player at a legacy gaming machines such as shown in FIG. 22 wins an amount equal to or greater than a predetermined amount ($50,000 in some jurisdictions) in a casino, there is a requirement to check the integrity of the gaming application. When this occurs, the legacy gaming machine may be powered-down and the ROM(s) on which the gaming software is loaded may be extracted in order to be verified in a trusted verifier named a “Kobetron.” The Kobetron produces a signature for each of the ROMs that is compared with the corresponding signature produced by the certification lab. In this manner, the integrity of the all the software components of the legacy gaming terminal, including the operating system, the game application and the configuration data may be verified, which game application and configuration data includes game application and data obtained from one of the MSI packages stored in the PC proxy's local memory. According to embodiments of the invention, when executing the global verification process subsequent to booting up the legacy gaming terminal, a verification equivalent to a “Kobetron verification” may be performed. This metaphor helps greatly in the acceptability of downloadable game technology by game regulators who are reluctant to accept state-of-the-art operating systems, multimedia and network technologies. Indeed, although the legacy gaming machine has been provided with all of the advantages and new functionalities described herein, it continues to operate in exactly the same manner as was previously certified. This is because the legacy gaming machine is “unaware” of the presence of the PC proxy 2210, of the API 2214 and of any ROM emulator(s) present therein, as it executes whatever code is loaded in its writable storage and/or ROM emulator(s), whether such code is native to the legacy gaming machine or loaded from a recently downloaded MSI (or equivalent code signed) package.

FIG. 23 illustrates an exemplary cycle from the moment a new game is created until it is first executed on a legacy gaming machine, according to an embodiment of the present invention. Reference numeral 2300 in FIG. 23 illustrates an exemplary cycle from the moment a game is being created until it is first executed on a legacy gaming machine, according to an embodiment of the present invention. The flowchart 2300 starts at 2302 when the decision to initiate a project to develop and release a new or updated game is made. The game developer (Cyberscan here, for illustrative purposes only) 2304 develops a new game application 2306 for a legacy gaming machine whose code must be certified at 2310 by a recognized certification lab 2308. The executable software components (executable by the legacy gaming machine but not by the PC proxy 2210) may not be directly code-signed but may be packaged in code-signed MSI installation packages signed, for example, with a unique PKI certificate whose subject name contains part number, version and friendly name identifiers for the MSI's content (or functionally equivalent) package. The MSI package may be signed as shown at 2312 using PKI certificates produced by a certificate issuing authority (CA) 2314 controlled by a trusted party 2316. The trusted party 2316 may be the certification lab 2308. The MSI packages together with scripts may then be copied to a removable media, such as a CD-ROM 2318 for example.

The game operator 2320 receives the CD-ROM and when it decides to deploy the new game 2322, the game operator may copy the MSI installation package(s) and any associated scripts from the removable media into the deploy server library 2204 coupled to the deploy server 2202. The scripts contain automation tasks such as copying to the repository and configuring the policies. The case of legacy gaming machines connected in a LAN may advantageously be controlled by the policies as soon as they are enforced. The Software Installation Policies (SIPs) controlling the installation of the content of the MSI package automatically execute the MSI installation packages upon policy enforcement, provided the corresponding Software Restriction Policies have been configured to authorize the execution of the MSI installation packages. This process is performed at 2328, 2330. If no SRP authorizes the execution of the MSI installation packages, the installation may be ignored or aborted, as shown at 2332. When the MSI installation package is authorized to execute, the software components and other files contained in the package may be copied to the PC proxy's local storage for later transfer to the legacy gaming machine's writable storage and/or ROM emulator, as suggested at reference numeral 2334, 2336. Other configuration tasks may also be carried out during the Microsoft installer installation process such as, for example, setting the Windows registry, setting shortcuts and installing software patches.

Download of the game software components from the deploy server library 2204 to the PC proxy 2210 of the gaming terminals may occur as soon as the associated Software Installation Policies are enforced (and the SRPs for the MSI installation package is permitted accordingly). Alternatively, a Software Management System (e.g. Microsoft SMS) may be employed to deploy the signed packages to the selected PC Proxies instead of using Software Installation Policies (SIP); in that case, Software Restriction Policies (SRP) may be used in a manner identical or similar as if SIPs were used. Game activation 2340 that authorizes execution of the game may also be achieved by enforcing the associated Software Restriction Policies. At this stage, a global verification process 2342, 2344 as described relative to FIG. 9 may advantageously be executed to verify the trust of each MSI package stored within the local storage of the PC proxy. Should the global verification fail, the PC proxy and the legacy gaming machine may be locked at 2346 pending servicing by an attendant.

When a player selects a game from a legacy gaming machine at 2338 from a selection menu and requests execution thereof, as shown at 2348, MSI package may be again verified as shown at 2350 before enabling, as shown at 2352, the components within the MSI package to be unpacked and transferred to the legacy gaming machine writable storage or to the ROM emulator via the API 2214, as shown at 2358. Should the verification fail, the PC proxy 2210 and the legacy gaming machine may be locked at 2354 pending servicing by an attendant.

According to an embodiment of the present invention, if the legacy gaming machine controller is a PC based controller that is capable of running Microsoft Windows® 2296 (or equivalent operating system software) controlled by policies as well as a legacy operating system 2292 (not capable of being controlled by central policies) such as Linux or other embedded operating system, another embodiment of the present invention includes a double-boot method. When the legacy operating system 2292 is booted, it is configured to execute certified software for the legacy gaming terminal 2290 from a writable mass storage 2294 such as a hard disk, a flash memory or other mass storage device. When the Windows operating system 2296 (or equivalent policy controlled operating system) is booted, it is configured to execute identically as the PC proxy described for 2208, 2228, 2248 and 2268, enabling secure download of software from the deploy server to the legacy terminal local storage device 2294. The certified code contained in the MSI package will be installed or copied to a location that will be accessible by the legacy operating system 2292 when booted in turn. Each of the two operating systems may be configured such that a request for re-booting to the other operating system or to the same operating may be requested by an application program executing in the booted mode. Preferably, no connection to the download network is allowed when the legacy operating system 2292 is booted such as to avoid intrusion, as it may not offer secure network communication 2206. A communication link may, however, exist when the legacy gaming machine is booted under the legacy operating system, such as to communicate with a central casino management system via the IGT SAS, IGT SuperSAS or GSA BOB casino standard protocol (IGT=International Game Technology, GSA=Game Standard Association).

According to an embodiment of the present invention, if the PC proxy is not joined to a domain and is therefore not able to be controlled directly by a central active directory (AD), a server having administrator access via the network to the gaming terminals may alternatively send to each gaming terminal a set of policy commands (called .ADM scripts or administrative scripts in Microsoft Windows®) that will configure the local policies (SRP, SIP, security policies and other policies). Once the local policies are configured and activated (by rebooting or by a policy update command), the PC proxy behaves identically as if an AD had directly forwarded the policies. The administrator password may advantageously be controlled from the remote server and set to a random password only known to the server software such that no human person has knowledge of it and may logon to a gaming terminal. The random password may be generated individually for each gaming terminal.

The context of a software session is the ordered sequence of properties of the software objects that defines it at a particular instant in time. The context (or implicit state) of a gaming session is controlled and recorded periodically by the gaming machine or terminal that owns the associated session meters. The context of a gaming session may include at least the meters and some machine configuration parameters. Traditionally and in compliance with gaming jurisdictions, gaming machines may store the game session context that includes the meters and some machine configuration parameters in respective non-volatile memories (Non-Volatile Random Access Memory or NVRAM, for example) for fault-tolerance. When a gaming machine is interrupted for whatever reasons (power outage or software latch-up or freeze, for example), the gaming machine will later reboot and resume the gaming software where it was interrupted, using the context that was saved in and retrieved from the NVRAM.

Such meters may include the patron's credit balance, the critical accounting and security meters associated with a variety of events such as coins inserted and coins given out for a particular game, alerts and an audit log of events for later examination if required. The operation for updating the meters in accordance with the game session activity is commonly referred as metering. Applying modern object oriented programming and persistent data storage techniques such as structured access to non-volatile memory, the meters may be defined as a class that is dynamically instantiated at run time. It may be clear to those acquainted with object programming that a multitude of instantiations of the meters class may be obtained, the only limitation being the memory available. Memory being plentiful on a typical computer unit controlling a gaming terminal, a substantial number of instantiations of the meters class may be obtained, as shown in FIG. 24. In the case of more modern gaming machines that use a disk based operating system (e.g. Microsoft Windows, Linux), especially when several games are selected that require a large number of meters to be maintained or when multiple instances of the meters are to be updated, portions of the NVRAM that are not used for the currently running game may be flushed to a hard disk to make space. Such portions of the NVRAM that are flushed to the hard disk may then be restored back to the NVRAM when necessary, in a manner that is similar to well known virtual memory management techniques in which pages of RAM are swapped or paged out to disk. Thus, the NVRAM size need not, in fact, limit the number of meters that may be stored in non-volatile memory. As the content of some meters are classified as “critical” for audit purposes, Redundant Arrays of Independent Disks (RAID) may be used to ensure redundancy.

FIG. 24 illustrates the instantiation of a number of meters 2400 that may be obtained on a gaming terminal. In this illustrative example, a gaming terminal 2402 has taken ownership of the meters associated with each of the patrons' submitted ID instrument for ID(x), ID(y) through ID(z) and the gaming activity in process on gaming terminal 2402 is reflected in the current session meters 2404. The credit balance displayed to the patron currently playing corresponds to the credit balance meter 2406; the other meters 2408 and the audit log 2410 may be reserved for use by the game operator. The meters may be frozen when the patron activates the cash-out signal or when, for example, the gaming machine downloads new software components or switches games.

The other meters 2412, 2414 and 2416 are associated with gaming sessions played previously on the gaming terminal 2402 and are frozen. Alternatively, any of the meters 2412, 2414 or 2416 may be associated with a new session initiated by the cashier when the patron deposits funds. Gaming terminal 2402 retains ownership of the frozen meters until, for example, ownership is requested by another gaming terminal. If the credit remaining on these meters is exhausted, transfer of ownership to another gaming terminal may be denied. If a redeem operation is requested by the cashier terminal or the automated cashier while some credit is available, the gaming terminal 2402 may authorize payment, close the meters and retain ownership of the closed meters. The closed meters may be erased at a later time in order to recover storage space in accordance with the gaming operator's rules for flushing old data. Methods and systems for transferring meters to and from gaming machines are disclosed in co-pending and commonly assigned patent application Ser. No. 11/261,303, filed Oct. 28, 2005, which application is hereby incorporated herein by reference in its entirety.

As discussed above relative to FIG. 22, to enable legacy gaming machines (e.g., gaming machines that do not run a version of Microsoft's Windows® operating system) to receive new trusted software components, embodiments of the present invention include provisions for one or more ROM emulators. The ROM emulator duplicates (provide an emulation of) the functions of the legacy gaming machine's ROM, so that the emulated ROM appears, to the legacy gaming machine, to behave like the legacy gaming machine's own native ROM. In effect, providing one or more ROM emulators within the locked enclosure of the gaming machine and in communication with an API and with the PC proxy enables the legacy gaming machine to emulate a manual change of the ROM(s) and/or EEPROM(s). This emulation uses a secure ROM/EEPROM emulator whose software image may be downloaded through the trusted and secure mechanism described herein, through code signed MSI installation packages downloaded from a deploy server to the PC proxy disposed within the secure and locked enclosure of the legacy gaming machine. In this manner, the ROM/EEPROM emulator(s) effectively bypass the existing ROM(s) and/or EEPROM(s) within the legacy gaming machine.

In the case wherein a legacy gaming machine is to receive updated software components through a download from a deploy server, the legacy gaming machine's executable software may be loaded into the ROM/EEPROM emulator in the manner discussed above and executed by the legacy gaming machine's controller. However, before the legacy gaming machine may switch games and/or to receive new software components, it is necessary to safeguard the meters associated with the previously played gaming sessions. These meters are typically saved within the legacy gaming machine's NVRAM or other non-volatile memory. These meters, and those of the legacy gaming machine itself—consolidation of meters since the last NVRAM clear) must be safeguarded before the new downloaded software components are allowed to execute and before the legacy gaming machine is re-activated for game play with the newly downloaded software components.

Toward that end, embodiments of the present invention include methods, devices and systems for saving and restoring meters to and from a persistent writeable memory as needed to enable both the download of new software components and regulatory compliance. Indeed, when a legacy gaming machine is caused to download and execute a new game, the meters associated with the legacy gaming machine and the meters associated with the previous gaming session must be safeguarded. Thereafter, the new game may be downloaded and executed from the ROM/EEPROM emulator, as discussed above. However, prior to activating game play with the new game, the gaming machine meters and the previous meters associated with the new game must be restored in the legacy gaming machine's writeable persistent memory. If no meters associated with the new game exist, as may be the case wherein the old meter data was flushed or in the case wherein there were no previous gaming sessions associated with the newly downloaded game, new meters may be initialized and transferred to the legacy gaming machine.

FIG. 25 shows another aspect of embodiments of the present invention, in which the gaming machine meters and the meters associated with player gaming sessions are safeguarded and restored as needed. FIG. 25 shows both a conventional legacy gaming machine 2502 and a legacy gaming machine 2504 according to an embodiment of the present invention. As shown, legacy gaming machine 2502 includes a controller 2506, a ROM 2510 as discussed above, and a persistent writeable memory (e.g., NVRAM) 2508. The NVRAM 2508 may persistently store the meters of the legacy gaming machine 2502 as well as the meters associated with player gaming sessions. As configured, the legacy gaming machine 2502 is unable to download updated software components and/or new games from the deploy server 2202 over the network 2206, and is unable to safeguard and load and restore meters corresponding to a newly downloaded game in the NVRAM, as only the legacy gaming machine controller 2506 is able to access, read from and write to the NVRAM 2508 and as the legacy gaming machine controller 2506 is functionally unable to download and install such new software components or new games. In the legacy gaming machine 2502, there is no mechanism or structure to enable either a secure download and loading of new software components or any mechanism or structure to enable the legacy gaming machine 2502 to load the meters associated with a newly downloaded game.

Reference 2504 designates a legacy gaming machine that has been provided with the added functionality that enables it to receive downloaded software components from, e.g., a deploy server library 2204 that is coupled to the deploy server 2202, according to an embodiment of the present invention. The deploy server 2202, in turn, may be coupled to the legacy gaming machine 2504 through network 2206. As shown, the legacy gaming machine 2504 according to an embodiment of the present invention may include the legacy gaming machine controller 2506. However, instead of ROM 2510, a ROM emulator 2254, a PC proxy 2210 with local storage (e.g., a hard drive) and an Application Program Interface (API) 2214 may be provided and configured as described above, to enable the legacy gaming machine 2504 to receive via the PC-proxy and execute new software components and/or activate new games. In addition, to safeguard the meters of a previous game, to load meters corresponding to a new game to be activated or to initialize new meters for the new game to be activated, the legacy gaming machine 2504 may be provided with an NVRAM emulator 2512, coupled between the PC proxy 2210 and the legacy gaming machine controller 2506. The ROM emulator 2254, the NVRAM emulator 2512 (which collectively may be referred to as storage emulation means), the legacy gaming controller 2506 and the PC proxy 2210 may be housed in a secured, locked cabinet that conforms to local gaming regulations.

According to embodiments of the present invention, the NVRAM emulator may provide a writeable persistent storage in which gaming machine and player meters may be stored. The NVRAM emulator 2512 may advantageously be readable and writeable by both the PC proxy 2210 and the legacy gaming machine controller 2506. The NVRAM emulator 2512 may advantageously be non-volatile such that its content is not lost and may be restored at a later stage in the eventuality of an unforeseen interruption or catastrophic hardware failure. Such an NVRAM emulator 2512 may be necessary, as the NVRAM or NVRAMs 2508 of legacy gaming machine 2502 is accessible only by the program software of the legacy gaming machine controller 2506, and not by the PC Proxy 2210. As the software that executes in the ROM 2510 cannot be changed, an embodiment of the present invention provides for an NVRAM emulation device that has a dual ported architecture (for example) that allows both the legacy gaming machine controller 2506 and the PC proxy 2210 to read and modify its contents. To install the NVRAM emulator 2512, the NVRAM 2508 originally present invention legacy gaming machine may be removed from its socket or unsoldered from the legacy gaming machine controller 2506, to fit a probe or piggy board that routes the electrical signals previously coupled to the NVRAM 2508 to the NVRAM emulator 2512 instead. The NVRAM emulator 2512 is also coupled to the PC proxy 2210 (via USB for example) to enable the PC proxy 2210 to access (read and write) the contents of the NVRAM emulator 2512. As shown at 2514, a control interface 2514 may be provided between the PC proxy 2210 and the legacy gaming machine controller 2506. The control interface may includes one or more wires connected between the PC proxy 2210 and one or more control lines of the legacy gaming machine controller 2506, to enable the PC proxy 2210 to selectively stop and reset the legacy gaming machine controller 2506 to enable the PC Proxy 2210 to take control (or relinquish control) of the read/write transfer to and from the ROM Emulator 2254 and the NVRAM emulator 2512 and to restart execution of the newly downloaded software components with the meters associated with the legacy gaming machine and with the newly downloaded software components (or new initialized meters, as appropriate).

FIG. 26 shows a method of downloading new software components, switching games and/or downloading a new game to a legacy gaming machine and of correspondingly swapping out game context. According to embodiments of the present invention, the game context may include critical accounting and security meters, coin in, coin out, audit logs and alerts. In step S2601, game play is enabled on the gaming machine (such as gaming machine 2504 in FIG. 25), and the gaming machine's and player's meters are stored in the NVRAM emulator 2512. This is the state in which the gaming machine 2504 is available for game play or is currently in a gaming session with the player. In step S2602, it is determined whether new software components are to be downloaded, a new game is to be downloaded or whether a new game is to be activated on the gaming machine 2504. If not, game play on the gaming machine 2504 remains enabled. If step S2602 determines that new software components are to be downloaded or a new game enabled on the gaming machine 2504, step S2603 may be carried out, in which game play is disabled on the gaming machine 2504. In this state, the gaming machine 2504 may not be played and may display “Gaming Machine unavailable” or some equivalent message on its display(s). As this stage, the legacy gaming machine may not be considered a gaming machine at all, as all gaming functions thereof have been disabled. As shown at step S2604, the PC proxy 2210 within the locked enclosure of the legacy gaming machine 2504 according to embodiments of the present invention may issue a signal through the wire(s) 2514 to stop the legacy gaming controller 2506, whereupon the PC Proxy 2210 may take control of both the ROM emulator 2254 and the NVRAM emulator 2512. In this state, the PC Proxy 2210 may read from and write to both the ROM emulator 2254 and the NVRAM emulator 2512. Thereafter, the PC Proxy 2210 may access the NVRAM emulator 2512, read the meters stored therein and store them into the local storage (e.g., hard disk drive or other non-volatile (flash storage, for example) memory). The local storage of the PC Proxy 2210 may advantageously be configured as a Redundant Array of Independent Disks (RAID) to insure fault tolerance. Disaster tolerance may also be provided by, for example, remotely storing an image of the meters offsite. Thereafter, as shown at S2606, the PC Proxy 22109 may download, verify and load new software components, new games into the ROM emulator(s) 2254 in the manner discussed above and as shown, for example, in FIG. 23. As shown at S2607, the meters associated with the newly software components or new game may be retrieved from the local storage of the PC Proxy 2210 and sent to the NVRAM emulator 2512 for storage. If no meters exist for the newly downloaded game, initialized meters may be transferred to the NVRAM emulator 2512. Lastly, as shown at S608, the PC Proxy 2210 may reset the legacy gaming machine controller 2506 through the control line(s) 2514, whereupon the legacy gaming controller takes control of the ROM emulator 2254 and the NVRAM emulator 2512. The legacy gaming machine, thereafter, operates in the same manner as it would with its own native ROM and its own native non-volatile storage (e.g., NVRAM). Indeed, from the legacy gaming machine's point of view, there is no difference between native ROM and the ROM emulator and between native NVRAM and the NVRAM emulator. Thereafter, game play may be re-enabled on the legacy gaming machine 2504 with the new software components or new game executing and the meters being stored in the NVRAM emulator 2512, as suggested by the arrow between steps S2608 and S2601.

FIG. 27 shows a network 2700 that includes legacy gaming machine according to an embodiment of the present invention. As shown therein, the network 2700 may include a legacy gaming machine 2702 and a casino management system or central system 2704 that may be coupled to the legacy gaming machine 2702 via a first network protocol 2712, such as the RS-422 legacy network protocol. A download server 2706 may also be coupled to the legacy gaming machine 2702 via a second network protocol, such as, for example, Ethernet. The legacy gaming machine 2702 may include a legacy controller 2506, a PC proxy 2210 and storage emulation means 2716. The PC proxy may be coupled to the storage emulation means by, for example, a USB connection. The storage emulation 2716 means may include a ROM emulator as shown at 2254 and an NVRAM emulator as shown at 2512 in FIG. 25. As suggested by FIG. 25, the original EPROM and NVRAM native to the legacy gaming machine 2702 may be removed and replaced by the storage emulation means 2716. Alternatively, such native ROM and NVRAM may be left in place, but simply bypassed and rendered non-operative. The PC proxy 2210 may also include local (re)writeable storage, such as a hard disk drive, as shown at 2212. As shown, the download server 2706 may obtain EPROM images of new games to be made available on the legacy gaming machine 2702 from a machine readable medium such as a CD-ROM (for example) 2708, which may be obtained from a trusted source, such as a gaming machine supplier.

According to an embodiment of the present invention, functionality may be provided to selectively download and activate games on the legacy gaming machine 2702, directly from the download server 2706 in the manner described above and/or by the player via an auxiliary touch panel directly controlled by the PC proxy. The auxiliary touch panel, shown at 2722 in FIG. 24, may be coupled to the legacy gaming machine and may provide enhanced services not previously available to the legacy machine. Such enhanced services may include services such as selection of a different game that would cause the storage emulation means 2716 to (a) save the current content of the critical meters and the machine configuration parameters at the state of the last played game (b) restore the content of the critical meters and the machine configuration parameters to the state of the same game when last played, (c) load the new game program in the executable emulated memory and (d) reboot the legacy machine to enable the legacy controller to execute the new game program from the emulated memory. As required by regulation, a selection of a new game via the menu selection made available to the player from the touch panel 2722 may be authorized only when a player's balance is zero or when a cash-out has been performed. Duly authorized personnel may also be permitted to select another game via the touch panel 2722 using a password scheme or other authentication device. When the legacy machine 2702 has completed rebooting, the player may play the newly-selected game. Another enhanced service that may be provided via the touch panel 2722 is the display of the pay table of the currently activated game. This is necessary as the pay table originally printed on the pay-glass of the legacy machine is no longer relevant to the newly selected and activated game and would have been replaced by non-game related information. The menu selection and/or pay table display panel 2724 may be mounted behind the legacy machine glass and in that case, alternative pointing devices directly controlled by the PC-proxy 2210 may be used, such as a joy-stick for example. Secondary games may advantageously be provided to the player via the touch panel 2722 and pointing device that are directly controlled by the PC proxy 2210. The PC proxy 2210 may communicate with the download server 2706 to obtain the secondary game to be displayed on the panel 2722 and to obtain the outcome of the secondary game. Contrarily to legacy gaming machines for which only a secondary game is possible only because it is associated with the game program stored in ROM, secondary games provided via the display 2722 and the pointing device are directly controlled by the PC proxy 2210 and may advantageously allow all or part of the downloaded and activated games to participate in the secondary game. A different secondary game may be associated with each downloaded and activated game. Methods and systems for implementing a secondary game are disclosed in commonly assigned and co-pending patent application Ser. No. 11/354,568, filed Feb. 14, 2006, which application is hereby incorporated herein by reference in its entirety.

FIG. 28 shows a network 2800 that includes a legacy gaming machine 2802 according to an embodiment of the present invention, in which a legacy peripheral device is replaced by an emulated version. Other peripheral devices may be fitted to the legacy gaming machine 2082 that are directly controlled by the PC proxy 2210 such as a player tracking card reader 2812, a ticket printer 2810, a ticket/voucher reader 2808, for example. It is significant to note that no information is exchanged between such added peripheral devices and the legacy gaming machine controller 2506. Indeed, all information inputted to and outputted from such added peripheral devices is directly exchanged with the PC proxy 2210 which, in turn, may exchange related information with the casino management system 2704 and/or the download server 2706 via the communication network 2712 and 2710, respectively. According to game regulations, activation of a new game may only occur when no player is being carded-in. The player tracking card reader 2812 controlled by the PC proxy 2210 may provide such information. The PC proxy 2210 may advantageously directly control a ticket printer 2810 to cause the ticket printer 280 to dispense a cashless credit instrument that may be redeemed at a cashier or inserted in the ticket reader 2808 or in the ticket reader of another (legacy or not) gaming machine.

It is to be noted that all the enhancements, peripheral devices and new services fitted to the legacy machine discussed herein do not require any modifications to be made to the original game program software. Moreover, the exact same image as originally burned or otherwise stored in the ROM (or EPROM), the CD-ROM or read-only hard-disk when the legacy gaming machine and games were certified is executed via the storage emulation means 2716 when the associated game is selected and activated.

According to another embodiment of the present invention, peripheral emulation means may be provided to replace and to emulate legacy peripherals. Whereas the legacy peripherals are directly controlled by the legacy controller 2506 of the legacy gaming machine 2802, the emulated legacy peripherals are directly controlled by the PC proxy 2210. An example of a legacy peripheral is a coin acceptor 2804. According to an embodiment of the present invention, the legacy coin acceptor 2804 may be disconnected from the legacy controller 2506 as suggested in FIG. 28, disabled and/or removed and may be replaced by an emulated coin acceptor 2807 that is directly controlled by the PC proxy 2210. Another example of a legacy peripheral is the coin hopper 2806. According to an embodiment of the present invention, the legacy coin hopper 2806 may be disconnected from the legacy controller 2506 as suggested in FIG. 28, disabled and/or removed from the legacy gaming machine 2802 and may be replaced by an emulated coin hopper 2805 that is directly controlled by the PC proxy 2210. The emulated coin acceptor 2807, from the legacy controller's point of view, appears electrically and functionally exactly as did the disabled legacy coin acceptor 2804. The emulated coin acceptor 2807 enables the legacy gaming machine with the added functionality of accepting cashless payment or credit instruments or other forms of electronic money. According to this embodiment, the PC proxy may be configured to include and execute a program to translate the credit captured and validated from the cashless instrument into pulses that emulate coins the pulses generated by the legacy coin acceptor as coins are inserted therein. Therefore, the emulated coin acceptor 2807 generates the same signals to the legacy controller 2506 as did the disabled legacy coin acceptor. The emulated coin acceptor 2807, therefore, appears to the legacy controller, to be exactly the same as the disabled legacy coin acceptor 2804. Therefore, no modifications need be made to the legacy controller 2506 or to the software executing therein to provide the legacy gaming machine with the new functionality of accepting cashless payment instruments. The same holds true for the emulated coin hopper 2805 that is controlled by the PC proxy 2210, which emulated coin hopper 2805 appears, to the legacy controller 2506, to be electrically and functionally identical to the disabled legacy coin hopper 2806. The emulated coin hopper may be configured to dispense cashless credit instruments in which the stored total is equal to the aggregate sum of the coins that would be dispensed by the legacy coin hopper 2806 and may even emulate the characteristic sound of the coins dropping into the tray. In the same manner, a legacy bill acceptor may be replaced by an emulated bill acceptor that accepts cashless credit instruments. According to further embodiments, the legacy coin acceptor 2804 and the legacy coin hopper 2806 may be maintained in the legacy gaming machine 2802 and the functionality thereof increased by providing the emulated devices having greater or functionality. For example, the legacy gaming machine 2802 may be configured to accept coins and dispense cashless instruments in return, via the emulated coin hopper 2805 and/or the ticket printer 2810.

FIG. 29 shows a network 2900 that includes legacy gaming machine according to another embodiment of the present invention. Generally, legacy gaming machines communicate with a central system or casino management system via an RS-422 communication channel using the antiquated SAS protocol (Slot Accounting System) or equivalent protocol via which the state of the legacy gaming machine is transmitted in real-time. According to an embodiment of the present invention, the PC proxy 2210 may be configured to intercept data (as shown at 2902) on the SAS communication link between the legacy controller 2506 and the central system, or casino management system 2704. The PC proxy 2210 may advantageously intercept or monitor the SAS communication to extract the necessary information required by gaming regulation before authorizing the selection and activation of a new game in the manner discussed above. For example, the intercepted or monitored information may include: status of the player tracking reader controlled by the legacy machine controller (if any), activation of the cash-out button, payment to the player completed, player credit balance, rebooting state, and the like. Such intercepted information may, alone or in combination with other information, allow the PC proxy to determine that no player is currently playing the legacy gaming machine 2702 and/or that no player has played the legacy gaming machine for a predetermined period of time. Indeed, gaming regulations generally require that the gaming machine remain in this (no player playing) state for a period of 5 to 10 minutes before a new game may be activated for game play.

The emulation of original obsolete devices (read-only storage and peripheral devices) and the monitoring or interception of real-time data (e.g., SAS) communicated by the legacy gaming machine to the central or casino management system, without requiring modification of the original game programs, prolongs the useful life of potentially hundreds of thousands of legacy gaming machines which would otherwise be retired and replaced at great expense. While the foregoing detailed description has described preferred embodiments of the present invention, it is to be understood that the above description is illustrative only and not limiting of the disclosed invention. Thus, the present invention should be limited only by the claims as set forth below. 

1. A method for a legacy gaming machine to execute a second legacy game software received over a network, the legacy gaming machine comprising a locked cabinet and a legacy controller enclosed within the locked cabinet, the legacy controller being configured to execute a first legacy game software stored in a read-only memory and to save the context of the first legacy game software in a non-volatile memory, the method comprising the steps of: providing a PC disposed within the locked cabinet, the PC including a writable persistent storage and a communication interface with the network; replacing the read-only memory storing the first legacy game software with a read-only memory emulator coupled to the PC and the legacy controller; replacing the non-volatile memory with a non-volatile memory emulator coupled to the PC and the legacy controller; providing a control interface between the PC and the legacy controller to at least one of stop and restart the legacy controller; receiving, by the PC, the second legacy game software over the network and storing the received second legacy game software to the writable persistent storage of the PC; initializing the content of the non-volatile memory emulator, and enabling the legacy controller to execute the second legacy game software.
 2. The method of claim 1, wherein the receiving step includes steps of: receiving a code signed package containing the second legacy game software over the network; verifying the code signed package, and unpacking the verified code signed package.
 3. The method of claim 1, wherein the second legacy game software is received over the network from a download server that enforces a policy, wherein the PC is controlled by the policy and wherein the verifying step is carried out according to the policy enforced by the download server
 4. The method of claim 3, wherein the download server that enforces the policy is configured with Microsoft Active Directory and wherein the policy controlling the PC is configured in Active Directory.
 5. The method of claim 1, wherein the second legacy game software is authorized by a regulatory authority.
 6. The method of claim 1, wherein the receiving step uses the Software Installation Policy (SIP) feature of the Windows® operating system.
 7. The method of claim 1, wherein the receiving step uses the Microsoft SMS Systems Management Server.
 8. The method of claim 2, wherein the receiving step is carried out with the package is a Microsoft MSI package.
 9. The method of claim 1, wherein the receiving step is carried out with the package being equivalent to a Microsoft MSI package.
 10. The method of claim 2, wherein the code signed package includes a PKI certificate that is uniquely generated and identified for the code signed package.
 11. The method of claim 2, wherein the code signed package includes a PKI certificate that is uniquely generated and identified for the second legacy game software.
 12. The method of claim 1, wherein the read-only memory of the legacy controller includes a ROM, an EPROM, a CD-ROM, a DVD and a rewritable memory in which the write function has been disabled by a mechanism that cannot be modified by software executing on the legacy controller.
 13. The method of claim 1, wherein the PC writable persistent storage includes one of a hard-disk, a floppy disk, a flash disk, a solid-state rewritable disk and a rotary rewritable media.
 14. The method of claim 2, wherein the read only memory of the legacy controller includes at least one EPROM and the read-only memory emulator emulates the at least one EPROM and wherein the enabling step includes sending the unpacked second legacy game software stored in the writable persistent storage of the PC to the read-only memory emulator to enable the legacy controller to execute the second legacy game software from the read-only memory emulator.
 15. The method of claim 2, wherein the read only memory of the legacy controller includes a CD-ROM reader and the read-only memory emulator emulates the CD-ROM reader and wherein the enabling step includes sending the unpacked second legacy game software to the read-only memory emulator such that the legacy controller executes the second legacy game software read from the read-only memory emulator.
 16. The method of claim 3, further comprising re-verifying a previously unpacked second legacy game software by carrying out steps of making a copy of the previously unpacked second legacy game software, unpacking the code signed package containing the second legacy game software according to the policy enforced by the download server, and comparing the unpacked second legacy game software with the copy of the previously unpacked second legacy game software.
 17. The method of claim 1, wherein the initializing step includes a RAM clear performed according to applicable game regulation.
 18. A gaming machine, comprising: a legacy controller; a PC having a network interface; a control interface coupled to the PC and the legacy controller to at least one of stop and restart the legacy controller; a read-only memory emulator coupled to the PC and to the legacy controller, and a non-volatile random access memory emulator coupled to the PC and the legacy controller.
 19. The gaming machine of claim 18, wherein the PC is programmed to receive software components over the network from a download server that enforces a policy and wherein the PC is controlled by the policy.
 20. The gaming machine of claim 18, further including writable persistent storage coupled to the PC.
 21. The gaming machine of claim 18, wherein the legacy controller further includes a communication interface with a central management system over a legacy network, and wherein the legacy gaming machine further includes: an interface controlled by the PC that enables data communicated over the legacy network to be intercepted by the PC, and a software process executing on the PC to detect at least one of cash-out, credit balance, attendant alert, and security alarm events from the intercepted data.
 22. The method of claim 21, wherein the legacy network implements the Slot Accounting System (SAS) standard.
 23. The method of claim 18, wherein the legacy gaming machine further includes a coin (or bill) acceptor emulator controlled by the PC and a cashless instrument accepting device controlled by the PC to enable the legacy gaming machine to accept credits via a cashless instrument without modifying software executing in the legacy controller.
 24. The method of claim 18, wherein the legacy gaming machine further includes a coin hopper emulator controlled by the PC and a cashless instrument dispensing device controlled by the PC to enable the legacy gaming machine to dispense winnings or credits via a cashless instrument instead of coins without modifying software executing in the legacy controller.
 25. A method for a legacy gaming machine to download and enable new game software to execute, the legacy gaming machine comprising a legacy controller, a PC having an interface to a network and writable persistent storage, a read-only memory emulator coupled to the PC and to the legacy controller, and a non-volatile random access memory emulator coupled to the PC and to the legacy controller, the method comprising the steps of: receiving a code signed package from the network; verifying the code signed package and unpacking the new game software from the verified code signed package; disabling game play on the legacy gaming machine; storing the unpacked new game software in the read only memory emulator; initializing contents of the non-volatile random access memory emulator; resetting the legacy controller and enabling the reset legacy controller to take control of the read-only memory emulator and the non-volatile random access memory emulator and re-enabling game play on the legacy gaming machine.
 26. The method of claim 25, wherein before the initializing step, the method further includes a step of reading existing meters in the non-volatile random access memory emulator and storing the existing meters in the PC's writable persistent storage.
 27. A method to enable a legacy gaming machine to execute a user-selected one of a plurality of new software legacy games, the legacy gaming machine comprising a legacy controller, a PC having an interface to a network and writable persistent storage, a read-only memory emulator coupled to the PC and to the legacy controller, and a non-volatile random access memory emulator coupled to the PC and the legacy controller, the method comprising the steps of: receiving a code signed package for each of the new legacy games from the network; verifying each received code signed package and unpacking each of the new legacy games from the verified code signed package; storing each of the unpacked new legacy games in the PC's writable persistent storage; disabling game play on the legacy gaming machine; providing the user with a menu of available ones of the stored new legacy games; accepting a selection from the user of a desired one of the available new legacy games; storing the user selected new legacy game in the read only memory emulator; initializing contents of the non-volatile random access memory emulator; resetting the legacy controller and enabling the reset legacy controller to take control of the read-only memory emulator and the non-volatile random access memory emulator and enabling the legacy controller to execute the new legacy game stored in the read only memory emulator.
 28. The method of claim 27, wherein the receiving step is carried out with the code signed package being received from a download server coupled to the network and wherein the download server enforces a software restriction policy.
 29. The method of claim 1, wherein the verifying step is carried out according to the software restriction policy.
 30. The method of claim 29, wherein the software restriction policy is configured with Microsoft Active Directory and wherein the PC is configured with Active Directory.
 31. The method of claim 27, wherein the received new legacy games are authorized by a regulatory authority.
 32. The method of claim 27, wherein the receiving step uses the Software Installation Policy (SIP) feature of the Windows® operating system.
 33. The method of claim 27, wherein the receiving step uses the Microsoft SMS Systems Management Server.
 34. The method of claim 27, wherein the receiving step is carried out with the code signed package being a Microsoft MSI package.
 35. The method of claim 27, wherein the receiving step is carried out with the package being equivalent to a Microsoft MSI package.
 36. The method of claim 27, wherein the code signed package includes a PKI certificate that is uniquely produced and identified for the code signed package.
 37. The method of claim 27, wherein the code signed package includes a PKI certificate that is uniquely produced and identified for the received new legacy game.
 38. The method of claim 27, wherein the PC writable persistent storage includes one of a hard-disk, a floppy disk, a flash disk, a solid-state rewritable disk and a rotary rewritable media.
 39. The method of claim 27, wherein the initializing step includes a RAM clear performed according to applicable game regulation.
 40. The method of claim 27, wherein the legacy gaming machine further comprises a touch sensitive display panel coupled to the PC and wherein the accepting step is carried out with the touch sensitive display panel sensing the user selected new legacy game from a menu of the available new legacy games.
 41. The method of claim 40, further comprising displaying a new pay table that corresponds to the user selected new legacy game.
 42. A method for a legacy gaming machine to selectively execute one of a plurality of software legacy games received over a network, the legacy gaming machine including a legacy controller and being upgraded with a network connected PC controlled under a software restriction policy enforced by a central server, a read-only memory emulator coupled to the PC, a non-volatile memory emulator coupled to the PC, a control interface coupled to the PC and to the legacy controller to at least one of stop and restart program execution by the legacy controller, and means of selecting one of the plurality of legacy games, the PC being programmed to receive, verify and unpack code-signed packages containing selected ones of the plurality of legacy games under the software restriction policy, the PC having persistent rewritable storage, the method comprising the steps of: enabling the legacy controller to execute a first one of the plurality of legacy games using a first context with which the first legacy game is uniquely associated, the first context becoming the current context; accepting a selection via the selecting means, of a second one of the plurality of legacy games; stopping program execution in the legacy controller using the control interface; saving the current context in the persistent writable storage of the PC; restarting program execution in the legacy controller to enable the legacy controller to execute the second legacy game using a second context which the second legacy game is uniquely associated, the second context becoming the current context, and returning to the accepting step.
 43. The method of claim 42, wherein the first context is initialized to a RAM-clear state as required by applicable game regulation prior to enabling the legacy controller to execute.
 44. The method of claim 42, wherein the second context is initialized to a RAM-clear state as required by applicable game regulation prior to enabling the legacy controller to execute.
 45. The method of claim 42, wherein the first context is initialized to a previous context uniquely associated with the first legacy game if the first legacy game has previously been executed by the legacy controller.
 46. The method of claim 42, wherein the second context is initialized to a previous context uniquely associated with the second legacy game if the second legacy game has previously been executed by the legacy controller.
 47. The method of claim 42, wherein the enabling step includes the steps of reading the first context from the persistent rewritable storage of the PC and loading the first context into the non-volatile memory emulator.
 48. The method of claim 42, wherein the restarting step includes the steps of reading the second context from the persistent rewritable storage of the PC and loading the second context to the non-volatile memory emulator.
 49. The method of claim 42, wherein the enabling step includes the steps of reading the first legacy game from the persistent rewritable storage of the PC, and if the first legacy game is available on the persistent rewritable storage, is not corrupted and is trusted, loading the first legacy game into the read-only memory emulator and restarting the legacy controller.
 50. The method of claim 42, wherein the restarting step includes the steps of reading the second legacy game from the persistent rewritable storage of the PC, and if the first legacy game is available on the persistent rewritable storage, is not corrupted and is trusted, loading the second legacy game into the read-only memory emulator and restarting the legacy controller.
 51. The method of claim 49, wherein the steps of reading the first legacy game includes the steps of verifying and unpacking the code-signed package containing the first legacy game according to the software restriction policy, and a step of storing the first legacy game to the persistent rewritable storage of the PC.
 52. The method of claim 50, wherein the steps of reading the second legacy game includes the steps of verifying and unpacking the code-signed package containing the second legacy game according to the software restriction policy, and a step of storing the second legacy game to the persistent rewritable storage of the PC.
 53. The method of claim 49 wherein, if the first legacy game is unavailable on the persistent rewritable storage of the PC, is corrupted or is not trusted, the method further includes carrying out step of: receiving over the network, verifying and unpacking the code-signed package containing the first legacy game according to the software restriction policy, storing the first legacy game to the persistent rewritable storage, loading the first legacy game into the read-only memory emulator and restarting the legacy controller.
 54. The method of claim 50 wherein, if the second legacy game is unavailable on the persistent rewritable storage of the PC, is corrupted or is not trusted, the method further includes carrying out step of: receiving over the network, verifying and unpacking the code-signed package containing the second legacy game according to the software restriction policy, storing the second legacy game to the persistent rewritable storage, loading the second legacy game into the read-only memory emulator and restarting the legacy controller.
 55. The method of claim 42, wherein the selection accepting step is controlled by a central scheduler via the PC.
 56. The method of claim 42, wherein the selecting means in the selection accepting step is configured to accept a selection from a player of the legacy gaming machine.
 57. The method of claim 42, wherein the selection accepting step is carried out with the selecting means including a display controlled by the PC and to display paytables and/or help files associated with a currently executing one of the plurality of legacy games.
 58. The method of claim 42, wherein the selecting step is authorized if no player has been playing on the legacy gaming machine for a predetermined amount of time.
 59. The method of claim 42, wherein the selecting step is not authorized if a player is carded-in as determined by a player tracking card reader controlled by the PC. 